Answers
Answer:
1. The arrows point in the way they do because it shows what eats what. These arrows point to specific things in a way that makes sure the ecosystem is balanced.
2. The role of the striped fish is to eat the zooplankton and be the tuna's food. And the tuna gets eaten by the shark or seal, so its a continuous chain.
Explanation:
Related Questions
stars a and b have the same luminosity, but star b is much farther away from earth. how does star a's apparent brightness compare with that of star b?
A. stars a and b have the same apparent brightness
B. star a has a greater apparent brightness than star b
C. star a has an apparent brightness that changes more than star b's
D. star a has a lesser apparent than star b
Answers
Answer: the answer is b.) star a has a greater apparent brightness than star b!!
Explanation: ap3x !!
The brightness can be compared as star a has a greater apparent brightness than star b (Option B).
What is star brightness?Star brightness refers to the amount of light released by a star and we can observe it for the Earth.
Star brightness largely depends on the distance that separates us from the star.Star brightness is a fundamental property to estimate the age of a particular star.
In conclusion, the brightness can be compared as star a has a greater apparent brightness than star b (Option B).
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Which of the following is a density-dependent factor?
a. food availability
b. volcanic eruptions
c. cold weather
Answers
Answer:
a) food availability
Density-dependent factors have varying impacts according to population size. Different species populations in the same ecosystem will be affected differently. Factors include food availability, predator density and disease risk. Density-independent factors are not influenced by a species population size.
Bats and birds eating insects at different times of day is an example of (1 point)
O survival of the fittest.
O resource partitioning.
O competitive exclusion.
O natural selection.
Answers
Bats and birds eating insects at different times of day is an example of Resource Partitioning. So, the correct option is B.
What is Resource Partitioning?
Resource partitioning or niche differentiation is a process of natural selection that will force competitors to use resources differently in such a way as to avoid competition between species. Resource partitioning causes the co-existence of species.
If bats and birds eat insects at different times of the day, there is no survival of the fittest. Competitive exclusion states that no two species can co-exist in the same niche for a long time.
Therefore, bats and birds eating insects at different times of day is an example of Resource Partitioning.
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Explain the reason the Type AB and Type O blood phenotypes always have the same
genotype, whereas the Type A and Type B blood phenotypes have two possible allelic
combinations.
Answers
Answer:
Because A is co-dominant to B and O is recessive, so the genotype is the same as the phenotype. But A can have 2 genotypes because A can mask a recessive allele, which makes the phenotype A. B can also mask a recessive allele, which makes the phenotype B.
Examples
AO (genotype) = A (phenotype)
BO (genotype) = B (phenotype)
HELPPP! I WILL GIVE YOU BRAINLIEST!!!
The diagram below shows a food chain.
Grass Rabbit Fox Bear
What would happen if human activity reduced the rabbit population?
A.
The bear population would increase.
B.
The grass population would decrease.
C.
The fox population would decrease.
D.
The fox population would increase.
Answers
Answer:
c, because the fox wouldnt have enough food
Explanation:
Answer:
C. The fox population would decrease.
Explanation:
It's a very direct cause and effect situation. Because the fox is a consumer of the rabbit, the fox would decrease after the rabbit population decrease, the bear would be indirectly affected.
Large molecules that are built from repeating smaller molecules called
(Insert first answer) are called (insert second answer)
Answers
Answer:
The first answer would be a polymer and the second answer would be a monomer.
14. Scientists use models of earthquakes to (5 points)
O change their location
O stop them from occurring
O understand the process
O increase the waves formed in the process
Answers
Answer:
under stand the process
Explanation:
i took the test
goodluck to people taking it
The Earth's magnetosphere is created by: A. a fusion in Earth's core
B. spinning in the Earth's core
C. gravity in the Earth's core
D. too much heat in the Earth's core
Answers
Answer:

solar wind
The magnetosphere is the region of space surrounding Earth where the dominant magnetic field is the magnetic field of Earth, rather than the magnetic field of interplanetary space. The magnetosphere is formed by the interaction of the solar wind with Earth's magnetic field.
What are the characteristics of kingdoms archaebacteria?
Answers
Answer:
Archaebacteria are obligate or facultative anaerobes, i.e., they flourish in the absence of oxygen and that is why only they can undergo methanogenesis.
The cell membranes of the Archaebacteria are composed of lipids.
The rigid cell wall provides shape and support to the Archaebacteria. It also protects the cell from bursting under hypotonic conditions.
The cell wall is composed of Pseudomurein, which prevents archaebacteria from the effects of Lysozyme. Lysozyme is an enzyme released by the immune system of the host, which dissolves the cell wall of pathogenic bacteria.
These do not possess membrane-bound organelles such as nuclei, endoplasmic reticulum, mitochondria, lysosomes or chloroplast. Its thick cytoplasm contains all the compounds required for nutrition and metabolism.
They can live in a variety of environments and are hence called extremophiles. They can survive in acidic and alkaline aquatic regions, and also in temperature above boiling point.
They can withstand a very high pressure of more than 200 atmospheres.
Archaebacteria are indifferent towards major antibiotics because they contain plasmids which have antibiotic resistance enzymes.
The mode of reproduction is asexual, known as binary fission.
They perform unique gene transcription.
The differences in their ribosomal RNA suggest that they diverged from both prokaryotes and eukaryotes.
Answer: Archaebacteria are obligate or facultative anaerobes, i.e., they flourish in the absence of oxygen and that is why only they can undergo methanogenesis.
The cell membranes of the Archaebacteria are composed of lipids.
The rigid cell wall provides shape and support to the Archaebacteria.
Explanation:
Hope this helps :)
the effects of toxic chemicals are minimized by which following three mechanisms
Answers
Answer:
Metabolic degradation, excretion, and repair.
Explanation:
which of tge following is true about Earth's temperatures?
Answers
Answer:
Water vapor and clouds are the major contributors to Earth's greenhouse effect
Explanation:
How does DNA analysis help scientists better understand evolution? (1 point)
O It spells out the amino acids that make up an organism.
o It shows us what codons an organism has.
o It helps chart changes in amino acid sequences over time.
O It shows us an organism's genome sequence.
Answers
Answer: i would say number one
Explanation: DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change
hope this help
Answer:
It helps chart changes in amino acid sequences over time.
Explanation:
I took the qc
Most prokaryotes have a single ______ molecule found in the cells cytoplasm. This large DNA molecule is typically referred to as the cells _________.
Answers
Answer:
most prokaryotes have a single double stranded circular DNA
the cell's nucleoid
Submit your project researching some environmental problems caused by the agriculture and natural resource industry. Be sure your
essay includes the following:
• the name of the article, author, and publisher or site owner;
• a description of the problem;
• a discussion of how it relates to agriculture or natural resources;
• a discussion of potential solutions to the problem; and
• a discussion of your own ideas on the causes of and solutions for the problem.
Ok
Answers
Answer:
this is what i put, i tried my best and im sorry its not the greatest but maybe it can help some of you out and give you some ideas.
Agriculture is the leading source of pollution in many countries. Pesticides, fertilizers, and other toxic farm chemicals can poison fresh water, marine ecosystems, air, and soil. They also can remain in the environment for generations.
What are the major environmental problems caused by agriculture?Agriculture contributes to a number larger of environmental problems that cause environmental degradation including climate change, deforestation, biodiversity loss, dead zones, genetic engineering, irrigation problems, pollutants, soil degradation, and waste.
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
Fossil fuels began to be used, which led to increased pollution, and the construction of factories led to the loss of habitat for many wild animals. The development of agriculture has led to the emergence of new plant varieties, domestication of animals, and disturbance of soil composition.
Therefore, some of the environmental problems caused by the agriculture and natural resource industry are well described above.
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PLEASE ANSWER ASAP
What do you notice about the anti parallel strands?
Answers
Answer:
Antiparallel: A term applied to two molecules that are side by side but run in opposite directions. The two strands of DNA are antiparallel. The head of one strand is always laid against the tail of the other strand of DNA
This man took the evolution work of Darwin and applied it to human cultures, arguing that just like species, some cultures are better adapted to the world than others (that is, they are more successful at extracting resources and providing for their offspring), and for this reason, those more successful cultures are superior.
a) Herbert Spencer
b) Franz Boas
c) E. B. Tylor
d) Lewis Henry Morgan
Answers
Answer:
A
Explanation:
A
Franz Boas took the evolution work of Darwin and applied it to human cultures (Option b).
Franz U. Boas was an anthropologist and who has been considered as the "Father of American Anthropology".F. Boas is known due to the theory of cultural relativism, which states cultures are essentially similar.Boas work's is in consonance with Darwin's ideas of natural selection and evolution.In conclusion, Franz Boas took the evolution work of Darwin and applied it to human cultures (Option b).
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How does a bacterium compare to a frog at the cellular level?
Answers
Answer:
Bacterium is prokaryotic while frog is eukaryotic, also Bacterium is unicellular while frog is multicellular
Explanation:
Bacteria can be considered unicellular prokaryotic organisms, whereas a frog is a multicellular eukaryotic organism.
What are prokaryotic cells?Prokaryotic cells are specific cells that do not have a cell nucleus and also lack membrane-bound organelles.
Conversely, eukaryotic cells contain organelles and the genetic material is compartmentalized in the nucleus.In conclusion, bacteria are unicellular prokaryotic organisms, whereas a frog is a multicellular eukaryotic organism.
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Move this lichen
to where it belongs within the process of primary succession
Pls help 15 points
Answers
Answer:
1
Explanation:
Lichen are usually the first thing to grow on bare rock, making them a pioneer species. Fun fact, you can use lichen to determine if the air quality in an ecosystem is polluted.
Hope this helped :)
Sustainable agriculture is farming that conserves natural resources and helps keep the farmed land productive indefinitely . This kind of agriculture minimizes the amount of energy , water , pesticides , and fertilizer needed to grow crops . Sustainable agriculture involves planting productive , pest resistant crops that require fewer resources and less maintenance . How do the resources needed for sustainable agriculture compare with the resources needed for large scale agriculture ? I’m
Answers
Answer:A
Explanation: more resources are usually need it for the initial set up and planning of traditional large scale agriculture techniques.
4. In a prairie ecosystem, nitrogen and other matter builds up in animal
wastes. Which organisms return this matter to the ecosystem by
breaking down wastes?
Answers
Answer:
Fungi, insects, and earthworms
Explanation:
They decompose wastes, returning nitrogen back to the ecosystem.
What kind of neurons are sending messages from the brains to legs ordering them to dance ?
Answers
Answer:
motor neurons
Explanation:
( i believe ,, correct me if i am wrong )
the sensory neurons collect stimuli from your surroundings or they send messages to the relay neurons ,, and therefore causes the motor neurons to act on the command to move a certain body part .
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Would the crater size for an impact crater change if it was dropped from 6 meters (18 ft)? Why or why not?
Answers
Answer:
yes it would change
Explanation:
lots of factors can contribute like acceleration distance and resistance.
Which of the following are steps of the inquiry process?
Check all that apply.
A. Summary
B. Prediction
C. Fabrication
D. Observation
E. Invention
ARNEF. Question
Answers
Answer:
Understand the problem.
Make a plan.
Carry out the plan.
Look back and reflect.
Explanation:
need the answer asap!!
Answers
Answer:
Cell division, as this includes meiosis and mitosis, which are types of asexual reprodcution
Explanation:
which part of Earth is not influenced by energy from the sun?
Answers
Answer: Mantle
Explanation:
cell division occurs once mitosis ,meiosis, or both
Answers
Answer:
Mitosis
Explanation:
Answer:
Mitosis.
Explanation:
Question 17
Identify the organelle by its function
Creates ATP (energy) and known as the powerhouse of the cell.
Answers
Which is the best way of comparing two or more organisms
A. Homologous structures
B. DNA
C. Vestigial Structures
D. Fossils
Answers
Answer:
its b
Explanation:
Drag the tiles to the correct boxes to complete the pairs.
Match the characteristics with the phylum.
water vascular system
tentacles with stinging cells
molting for growth
the presence of mantle
Arthropoda
Cnidaria
Molluska
Echinodermata
Answers
Answer:
Water vascular system = Echinodermata
Tentacles with stinging cells= Cnidaria
Molting for growth= Arthropoda
Presence of mantle= Molluska
Explanation:
describe the three general methods used by ecologists to study organisms
Answers
Answer: The three main research methods used are observation, modeling, and experimentation.
Explanation:
Observation:
Every experiment requires observation. Ecologists must observe the environment, the species within it, and how those species interact, grow and change. Different research projects different types of assessments and observations.
Ecologists sometimes use a desk-based assessment, or DBA, to collect and summarize information about specific areas of interest. In this scenario, ecologists are using information already collected from other sources.
Oftentimes, however, ecologists rely on observation and fieldwork. This entails going into the habitat of the subject of interest to observe it in its natural state. By doing field surveys, ecologists can track the population growth of species, observe community ecology in action and study the impact of any new species or other introduced phenomena in the environment.
Each field site will differ in nature, shape, or other ways. Ecological methods allow for such differences so that different tools can be used for observations and sampling. It is crucial that sampling be done randomly to combat bias.
Modeling:
Ecological methods rely heavily on statistical and mathematical models. These provide ecologists with a way to predict how an ecosystem will change over time and react to changing conditions in a system.
Modeling also provides another way to decipher ecological information when fieldwork is not practical. There are several drawbacks to relying solely on fieldwork. Because of the typically large scale of fieldwork, it is not possible to replicate experiments exactly. Sometimes even the lifespan of organisms is a rate-limiting factor for fieldwork. Other challenges include time, labor, and space.
Modeling provides a method in which to streamline information more efficiently.
Examples of modeling include equations, simulations, graphs, and statistical analyses. Ecologists use modeling for producing helpful maps as well. Modeling allows for calculations of data to fill in gaps from sampling. Without modeling, ecologists would be hampered by the sheer amount of data that needs to be analyzed and communicated. Computer modeling allows for comparatively rapid analysis of data.
A simulation model, for example, enables the description of systems that would otherwise be extremely difficult and too complex for traditional calculus. Modeling allows scientists to study coexistence, population dynamics, and many other aspects of ecology. Modeling can help predict patterns for crucial planning purposes, such as for climate change.
Humanity’s impact on the environment will continue. It, therefore, becomes ever more crucial for ecologists to use ecological research methods to find ways to mitigate the effects on the environment.
Experimentation:
The overarching purpose of ecological methods for research is to get high-quality data. Experiments must be carefully planned.
Hypothesis: The first step in any experimental design is to come up with a hypothesis or scientific question. Then, researchers can come up with a detailed plan.
Factors that affect fieldwork experiments include the size and shape of an area that needs to be sampled. Field site sizes range from small to very large, depending on what ecological communities are being studied. Experiments in animal ecology must take into account the potential movement and size of animals.
For example, spiders would not require a large field site for study. The same would be true when studying soil chemistry or soil invertebrates. You could use a size of 15 meters by 15 meters.
Herbaceous plants and small mammals might require field sites of up to 30 square meters. Trees and birds might need a couple of hectares. If you are studying large, mobile animals, such as deer or bears, this could mean needing a quite large area of several hectares.
Deciding upon the number of sites is also crucial. Some field studies might require only one site. But if two or more habitats are included in the study, two or more field sites are necessary.
Tools: Tools used for field sites include transects, sampling plots, plotless sampling, the point method, the transect-intercept method, and the point-quarter method. The goal is to get unbiased samples of a high-enough quantity that statistical analyses will be sounder. Recording information on field data sheets aids in the data collection.
A well-designed ecological experiment will have a clear statement of purpose or question. Researchers should take extraordinary care to remove bias by providing both replication and randomization. Knowledge of the species being studied as well as the organisms within them is paramount.
Results: Upon completion, collected ecological data should be analyzed with a computer. There are three types of ecological experiments that can be made: manipulative, natural, and observational.
Hope This Helps!
The 3 general methods used by ecologists to study organisms include:
ObservationModellingExperimentationObservation involves observing organisms in their natural habitats or environments and then recording the findings. It is usually done by field surveying.
The different species living in an environment, how they interact with each other and other abiotic components of the environment are some of the observations taking during field surveys. The growth of individual species, the effects of introducing new species, their adaptations and other areas of community or ecosystem ecology can be studied through observation.
Modelling requires a simulation of real-life ecological processes through different manipulations. This could be done in the laboratory, on the field, or even on the computer. Computer modelling requires that data from observation or experimentation are supplied as input and the inputs are subject to mathematical maneuvering.
With models, complex ecological processes can be simulated and analyzed and extrapolated to deduce how things might happen in real life ecological interactions.
Experimentation involves setting up experiments following the scientific method. It can be a observational or controlled experiments.
Observational experiments requires studying organisms, populations, communities, or ecosystems through pure observation without changing or manipulating any variable.
Controlled experiments requires that variables are introduced and manipulated in some groups while some groups serve as the baseline without any manipulated variables.
Data are obtained from experiments and these are analyzed in relevant ways to support or reject hypotheses.
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