Answer:
mold
Explanation:
Select the correct answer.
Which of these is a hypothesis?
A. Salmon are kept in their natural habitat and treated with fungicides whenever infected.
B. The yield of salmon is 2,000 kilograms in the month of April and 1,500 kilograms in the month of October.
C. Salmon are more prone to infections during the summer than in other seasons.
All of the following are parts of the respiratory system except
pharynx
brionchioles
septum
trachea
Answer:
c) septum
Explanation:
Hope it helps :)
All of the following are parts of the respiratory system except septum.
What is respiratory system?
The network of organs and tissues that aids in breathing is known as the respiratory system.
It consists of your blood vessels, lungs, and airways. The respiratory system also includes the muscles that propel your lungs. Together, these components help the body circulate oxygen and eliminate waste gases like carbon dioxide.
Numerous components of the respiratory system work together to support breathing.
The organs and other body parts involved in breathing when you exchange oxygen and carbon dioxide are known as the respiratory system.
Therefore, All of the following are parts of the respiratory system except septum.
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Please select the word from the list that best fits the definition
The path followed by an object in space around another object in space
A-orbit
B-solstice
C-equinox
Answer:
what is it bro i need it too
Explanation:
Answer:
i think it's A.
Explanation:
i hope i'm not to late and that this helps-
Which tissue transports hormones in plants?
A, phloem
B, xylem
C, parenchyma
D, collenchyma
E, fibres
Answer:
A) Phloem
Explanation:
Help
1. Using the same food web above, explain why the arrows point in the direction that they do.
2. in th above food web, Which of these describes the role of the striped fish?
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:
Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism?
Answer:
Nucleotides
Explanation:
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.
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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Help me please ahhhhhh omgggg ahhh help
Answer:
B
Good gaming skills is not inheritable, but is learned. A, C, and D can all be passed down.
is the archea kingdom unicelluar or multicellular?????????
Answer:
Protists are eukaryotic organisms that can be unicellular, colonial, or multicellular. They are called Archaea, a separate kingdom (even a separate domain). Almost everywhere like earth's crust, organic matters, water bodies, bodies humans and animals and so on. Archaea inhabit nearly every environment on earth, but no archaea have been identified as human pathogens. Unicellular: Archaebacteria, Eubacteria and Protista.
Explanation:
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The Archea Kingdom consists of Unicellular Organisms
_____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
How many bones are in the thoracic cage
PLZ HURRY ITS A TIME LIMIT
Answer:
a
Explanation
its called erosion
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
Answer:
under stand the process
Explanation:
i took the test
goodluck to people taking it
Why do we care about how the climate changed in the past? A.Scientists are curious about how fossils are made. B.We gain information about the movement of tectonic plates.
C. It gives us more information about how the climate is changing now and might change in the
future.
D. I keep asking myself the same question.
Answer:
C
Explanation:
It can help scientists predict how climate change will occur in the future and how can they stop it
What are the characteristics of kingdoms archaebacteria?
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 :)
Help pleaseeeeeeeeeeee
_________is the most common type of orchid bears the name because of its supposed resemblance to moth in flight
Answer:
Moth Orchid
Explanation:
The Moth Orchid is the most common type of orchid and bears the name because of its supposed resemblance to a moth in flight. Native to Southeast Asia, the Philippines, and northern Australia, the Moth Orchid isn't exactly hard to find, and it comes in nearly every colour of the rainbow.
As a rule, the amount of energy that is transferred from one trophic level to the next higher level is about
Answer:
where is the question
Explanation:
As car 1 hits car 2 what happens next?
Answer:
c
Explanation:
A heterozygous genotype results in what type of expression of phenotype?
HELP ASAP PLZ PLZ
Would the crater size for an impact crater change if it was dropped from 6 meters (18 ft)? Why or why not?
Answer:
yes it would change
Explanation:
lots of factors can contribute like acceleration distance and resistance.
which behavior is an example of how animals defend their teritory
Answer:
Many animals rely on smells to mark their territories, spraying urine, leaving droppings or rubbing scent glands around the territories' borders. Approaching animals will be warned off the territory without ever encountering the territory's defender.
Explanation:
MARK ME BRAINLIEST PLZZZZZZZZZZzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz1. In a DNA molecule, T pairs with ___
A
C
G
2. There are different bases of
DNA.
2
4
6
8
3. In a DNA molecule, pairs with
А
G
T
Answer:
1- A
2- 4
3- A with T
G with C
T with A
Explanation:
The nucleic acid is made up of five major nitrogenous bases. These nitrogenous bases are adenine (A), guanine (G), thymine (T), and cytosine (C). Adenine is always paired with thymine, and guanine is always paired with cytosine. These are known as base pairs. Uracil is only present in RNA, by replacing thymine.
PLZ HURRY ITS A TIME LIMIT
Answer:
d) transport of rocks and mineral through wind
1. ASSERTION AND REASONING QUESTIONS:
In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:
(a) Both assertion (A) and reason (R) are true, and reason (R) is the correct explanation of
assertion (A).
(b) Both assertion (A) and reason (R) are true, but reason (R) is not the correct explanation of
assertion (A).
(c) Assertion (A) is true, but reason (R) is false. (d) Assertion (A) is false, but reason (R) is true
1) Assertion: Atom is electrically neutral.
Reason: A neutral particle, neutron is present in the nucleus of atom.
2) Assertion: Maximum number of electrons that can be accommodated in L-shell is 8 Reason: The formula to find maximum number of electrons in a shell is 2n2.
3) Assertion: For noble gases, valency is zero.
Reason: Noble gases have 8 valence electrons
4)Assertion: The Nitrogen atom loses its 3 valence electrons to form its ion Reason: Nitrogen ion is an anion
II CHOOSE THE CORRECT ANSWER:
1.An atom has 4 electrons and 4 protons and 4 neutrons. The atom is electrically neutral.
Which difference in the properties of protons and electrons affects the electrical neutrality (c) Electrons and protons have opposite charges of the same magnitude
of the atom?
(a)Electrons are 2000 times lighter than protons.
(b) Electrons and protons have the same charge and mass.
(d) Electrons are present in the outer side of the atom compared to the protons..
Answer:
1) B
2) A
3) A
4) D
Explanation:
An atom is neutral because it contains an equal number of protons and electrons. Though the atom actually contains neutrons, this reason does not explain the electrical neutrality of the atom.
The L shell actually contains eight electrons because the maximum number of electrons accommodated in each shell is given by 2n^2 where n is the principal quantum number. Since the L-shell corresponds to n=2 then the reason is the correct explanation of the assertion.
The valency of atoms is determined by the number of electrons in the outermost shell of the atom. Remember that atoms having a filed valence shell(eight electrons in the outermost shell) have a valency of zero. Hence the noble gases possess a zero valency. Thus the reason is the correct explanation of the assertion.
Nitrogen forms its ion by electron gain and not by electron loss because nitrogen forms an anion. This anion is formed by a gain of three electrons. The assertion is false but the reason is true.
Most prokaryotes have a single ______ molecule found in the cells cytoplasm. This large DNA molecule is typically referred to as the cells _________.
Answer:
most prokaryotes have a single double stranded circular DNA
the cell's nucleoid
Which is the best way of comparing two or more organisms
A. Homologous structures
B. DNA
C. Vestigial Structures
D. Fossils
Answer:
its b
Explanation:
Which type of the media is used to grow Prevotella melaninogenica?
(a) Complex media
(b) Selective & Differential media
(c) Nutrient agar
(d) Reducing media
what stucture produces chemical that regulate the reproductive
Answer: Mitochondria
Explanation:
1. Over time, the fish and crab populations have:
A. Decreased
B. Increased
C. Stayed the same
D. Fluctuated up and down.
2. Since 2014 the fish and crab populations have:
A. Decreased
B. Increased
D. Stayed the same.
1-D
2-A
this is due to pollution
describe the three general methods used by ecologists to study organisms
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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