Answer:
answer is b
it allows specific substances to cross through it
A student lists the numbers of fish, snails, and frogs in an
aquarium.
Which two terms describe this type of data?
O A. Discrete
O B. Quantitative
C. Qualitative
D. Continuous
Answer:A-discrete
Explanation:Discrete data is a information that we collect and that can be counted and only has a certain number of values.
Can u please help me .
Answer:
For number 6 the answer is option C.
For number 7 the answer is option C.
Hope this helps you.
Please help
Lightning converts_________
into ________.
A. nitrates, atmospheric nitrogen
gas
B. ammonia, nitrites
C. nitrites, ammonia
D. atmospheric nitrogen gas,
nitrates
Answer:
The answer is option D.
atmospheric nitrogen gas,
nitrates
I hope this helps you
Answer:
D. Atmospheric nitrogen gas, nitrates
Explanation:
The enormous energy of lightning breaks nitrogen molecules in the stmosphere and allows their atoms to combine with oxygen in the air forming nitrogen oxides. These dissolve in rain, forming nitrates, that are carried to the earth.
(Hopefully this helps somehow)
Which statement best describes how a catalyst can speed up a chemical reaction? The catalyst decreases the reaction energy needed. The catalyst increases the concentration of products. The catalyst binds to enzymes to release substrates. The catalyst increases the concentration of reactants.
Answer:
The catalyst decreases the reaction energy needed.
Explanation:
The catalyst speeds up chemical reactions by decreasing the amount of activation energy/reaction energy needed in the reaction.
Compared to reactions without catalysts, they are much faster because there is less activation energy needed.
Catalyst is any substance that causes or increases the rate of a chemical reaction without itself being consumed For example - enzymes are biocatalysts.
The catalyst can speed up a chemical reaction by reducing the activation energy or by changing the reaction mechanism.
The minimum amount of extra energy required by a reacting molecule to get converted into the product is defined as activation energy.
So, the correct answer is The catalyst decreases the reaction energy needed.
Other options-
The catalyst increases the concentration of products- incorrect. Catalysts do not affect the equilibrium concentrations of products or reactants. The catalyst binds to enzymes to release substrates- incorrect. The catalyst binds to the substrate and converts the substrate into products.The catalyst increases the concentration of reactants- incorrect. Catalysts do not affect the equilibrium concentration of products or reactants.Learn more about activation energy-
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Which animal has a single-loop circulation?
Answer:
Fish
Explanation:
Fish are vertebrates and only have a single loop-circulation system.
Answer:
fish
Explanation:
i just took the test. hope this helps
How many total, non-unique alleles are there for each gene in a population of 250 humans?
a- 250
b- 1000
c- 125
d- 500
Answer:
its 500
Explanation:
i just took the quiz and this was the right answer.
Answer:
I hope this helps.
Explanation:
(02.04 MC) All eukaryotic cells have a cytoskeleton, including plant cells, which have cell walls as well. What does the cytoskeleton in a plant cell do that the cell wall cannot? (4 points) It acts as a framework inside the endoplasmic reticulum and keeps it from collapsing. It helps keep the organelles in place and directs their movement as needed. It provides energy and helps to move molecules throughout the cell. It keeps the DNA safely enclosed in the nucleus and holds the nucleus together.
Answer:
it acts as a framework
Explanation:
The phytoplankton at the bottom of the pyramid take in and store a certain amount of the Sun's energy. Does all of the energy stored by the phytoplankton reach the top level of the pyramid?
13
Select the correct answer.
A farmer changed certain timings of his farming operations to control pest infestation in his field. Which pest control method did he use?
OA
genetic pest control
B. biological pest control
C. cultural pest control
OD
chemical pest control
О Е
mechanical pest control
Reset
Next
Answer:
Is it chemical pest control?
Explanation:
Might I be right.....
Answer:
C
Explanation:
Cultural pest control is done at a particular te set to be done.
20 points and brainlist and thanks please Mike wrote the characteristics of two types of galaxies as shown below: Type A: Does not have a regular shape Type B: Forms a perfect sphere or a smooth flattened oval Which statement is correct?
Type A is a spiral galaxy and Type B is an elliptical galaxy.
Type A is an elliptical galaxy and Type B is a spiral galaxy
. Type A is an irregular galaxy and Type B is an elliptical galaxy.
Type A is an elliptical galaxy and Type B is an irregular galaxy.
Answer:
The answer is B. Please do as you said
Answer:
the answer is B
Explanation:
I got a 100 on the test
Which of the following describes the general climate in climate zones at low latitude? ❤❤❤❤❤❤❤❤❤❤❤❤❤❤ Precipitation levels and average temperatures are high. Precipitation levels and average temperatures are low. Precipitation levels are high, and the average temperatures are low. Precipitation levels are low, and the average temperatures are high.
Answer:
Precipitation levels are low, and the average temperatures are high.
Explanation:
The low latitude climates lie for the most part between the tropics of Cancer and Capricorn. They occupy the equatorial zone, most of the tropical zone, and part of the subtropical zone. Climates in this region tend to be extremely dry and hot.
Precipitation levels and average temperatures are high. Therefore, option (A) is correct.
What is a low latitude climate zone?Low latitude climate zones are regions of the world that are located near the equator and have relatively consistent weather patterns throughout the year. These zones are characterized by high temperatures and abundant precipitation, which support a diverse range of plant and animal life.
The vegetation in these regions is typically lush and green, with tropical rainforests, savannas, and wetlands being common types of ecosystems. Low latitude climate zones are home to a wide variety of wildlife, including primates, big cats, and a vast array of bird species. These regions are also important for human habitation, with many of the world's largest cities located within the low latitude zone.
Overall, the low latitude climate zone is a hot and humid environment that supports a rich and diverse ecosystem. Therefore, option (A) is correct.
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A very metabolically active cell is likely to have lots of which type of organelle?
Answer:
The answer will be mitochondria.
Explanation:
I hope this helps :)
in binomial nomenclature of organisms, every species name includes two words. The first word is the name of the ___.
Answer:
genus
Explanation:
Binomial nomenclature is a naming system for all living things. It consists of two parts with the first being the genus and the second being the specific epithet.
Hope that helps.
Using the drop-down menus below, identify the processes cells use to maintain homeostasis
Answer:
OsmosisActive TransportPassive TransportDiffusionExplanation:
Answer:
Osmosis
Active Transport
Passive Transport
Diffusion
Explanation:
Sperm and egg cells are called what?
Answer:
sperm- spermatozoa
egg cells- gamete
GRADPOINT Which of the following foods would have the LEAST greenhouse gas footprint?A fish B beef C vegetables D nuts
Answer:Fish.
In most cases the differences observed by the impacts of methane on the climate is called the greenhouse footprint.Beef and lamb, has higher green house effect than pork, chicken and vegetables.
.
Beef and lamb systems emissions are dominated by methane.This is a short lived gas that has potent effects on global warming.Thus these animals have higher foot prints.
Besides, the destruction of plants population during grazing and rearing disrupts the CO2 cycle which may lead to the green house effect.
However, fishery does not need destruction of vegetation for farmland for rearing,and compare to above. Neither is methane released from the emission.They therefore have less less footprint.
Fish has lower green house effect,It is therefore the least
Explanation:
Labeling the Amino Acid Structure Using the drop-down menus, label the parts of an amino acid. Label A Label B Label C
Answer:label a:amino group
Label b:R group
Label c:carboxyl group
Explanation:
Label b:R group, Label c:carboxyl group.
What are Amino acid?All living things employ amino acids as building blocks for proteins. Twenty distinct amino acids are required by your body for proper operation.
You must consume essential amino acids through the food you eat. Beef, eggs, and dairy products are just a few examples of meals that contain essential amino acids.
The building components of protein are amino acids. Long strands of amino acids make up proteins. Numerous distinct proteins in your body each perform vital functions. Each amino acid sequence in a protein is unique.
Therefore, Label b:R group, Label c:carboxyl group.
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help please urgent 1. What's inside a black hole? 2. What happens if a person goes into a black hole? 3. What is black hole in simple words? 4. What are the 4 types of black holes? 5. Why is the black hole asymmetric?
Answer:
Answer to 1: a black hole is a tremendous amount of matter crammed into a very small (zero) amount of space. Answer to 2: the top of your head would feel so much more gravitational pull than the tips of your toes that you would be stretched, longer and longer Answer to 3: A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. because no light can get out, people can't see black holes Answer to 4: stellar, intermediate, supermassive, and miniature. Answer to 5: the asymmetry of bright and dark sections of the ring are caused by the Doppler effect as the matter is coming toward Earth (brighter) or receding (dimmer).
Explanation:
Which features are usually associated with karst topography?
A. Caves and sinkholes
B. Lakes and wetlands
C. Mountains and valleys
D. Plains and plateaus
A. Caves and sinkholes are usually associated with karst topography.
How Karst topography is formed?Karst topography is formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. As water flows through these rocks, it dissolves them, creating underground cavities and channels.
Over time, the ground above these cavities can sink, forming sinkholes. The dissolved rock can also create caves and other unique features such as natural bridges, disappearing streams, and springs.
Karst topography is a type of landscape that is characterized by distinctive landforms and features that are formed by the dissolution of soluble rocks, such as limestone, dolomite, and gypsum.
These rocks are highly susceptible to chemical weathering, which is the breakdown of rocks and minerals through chemical reactions. The process of chemical weathering dissolves the rocks, leaving behind distinctive landforms and features.
Overall, karst topography is a unique and fascinating landscape that is created by the dissolution of soluble rocks. The distinctive features of karst topography, including caves, sinkholes, natural bridges, disappearing streams, and springs, make it a popular area for exploration and study.
However, the hazards associated with sinkholes and other features of karst topography also make it important to be aware of the risks when living or traveling in these areas.
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which of the following is an example of a stratovolcano
Answer:
Los volcanes Villarrica, Llaima, Volcán Osorno, Chillán (en Chile), Nevado de Colima, Volcán Ceboruco, Popocatépetl (en México)ejemplos de estratovolcanes
What are molecular clocks used for
A- to cure hereditary disease
B- to classify
C- to locate fossils under water
D- to compare homologous structures
answer:
B-to classify
Answer:
to classify organisms
A
Identify the structures in the cell pictured on the
right
Label A
Label B
Label C
Label D
D
<
<<
DONE
С
B
Answer: Label d?
Explanation:
A class is doing a science experiment to investigate the blood types of each of the students. Which label would be on the container in which the students dispose of materials that have leftover blood? chemical waste broken glass hazardous waste trash
Answer:
hazardous waste
Explanation:
Blood is a biohazardous waste, also called infectious waste or biomedical waste, is any waste containing infectious materials or potentially infectious substances such as blood. Of special concern are sharp wastes such as needles, blades, glass pipettes, and other wastes that can cause injury during handling.
A species of fish evolved over thousands of years to have gills that allowed the fish to swim deep in the sea. What’s the effect of this development on deep-water resources?
The fish developed the gills because of____ . Because the fish are now able to swim in deep water, their ____ in shallower water will have less food. Likewise, competition for food among deep-water fish that eat the same types of food will ____.
1.
A. genetic modification
B. hybridization
C. natural selection
2.
A . competitors
B. predators
c.prey
3
a .increase
b. decrease
C. not change
Answer:
1 a 2b 3increase
Explanation:
Genetically fishes have gills to inhale they take water through gills and u know water has some amount of oxygen
2 predators increase because many fishes eat each other bcz of competition
3 so relating point 2 competition also increase
The fish developed the gills because of genetic modification . Because the fish are now able to swim in deep water, their predators in shallower water will have less food. Likewise, competition for food among deep-water fish that eat the same types of food will increase.
What are the adaptations of fish gills?Gills are organs that filter oxygen from the surrounding water. The inside structure of gills is an adaptation that enables two processes to occur: acquiring oxygen and removing a waste product called carbon dioxide.
Fish are able to efficiently exchange gases thanks to the vast surface area of their gills, which allows for this process. The extensive amount of surface area that the blood capillaries in each gill filament contribute because of the little distance that must be traveled for diffusion, both the outer layer of the gill filaments and the walls of the capillaries are only one cell thick.
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Consider the chromosome. The parts of a chromosome are labeled. The lines on the chromosome are labeled b. Which best describes the function of the part labeled b? carries all the genetic information of the organism provides all of the master instructions of the cell joins sister chromatids codes for a specific trait
Answer:
carries all the genetic information of the organism
Explanation:
Genes are located on many chromosomes. In other words, a particular section of the genome is located on each chromosome.
What are the main role of chromosome in the information?The primary function of the chromosomes is to transfer DNA, the fundamental component of genetic material. The genetic instructions for numerous biological functions are encoded in DNA.
Chromosomes, which resemble threads, are located in the nucleus of both animal and plant cells.Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA).
These processes are necessary for the development, maintenance, and procreation of the organisms.Proteins like histones, which protect the chromosomes.
Therefore, DNA is passed down from parents to children and contains the precise instructions that give each sort of living thing its individuality.
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8. Complete the chart by describing what kinds of organs or tissues each type of
germ layer becomes:
Endoderm...
Mesoderm becomes...
Ectoderm becomes...
The endoderm forms organs of the digestive and respiratory systems, the mesoderm gives rise to structures of the musculoskeletal and circulatory systems, and the ectoderm develops the nervous system and outer coverings of the body.
The three germ layers - endoderm, mesoderm, and ectoderm - are the primary cell layers that form during embryonic development. Each germ layer gives rise to specific organs and tissues in the body.
1. Endoderm: The endoderm is the innermost germ layer and gives rise to various organs of the digestive and respiratory systems. It forms the lining of the gastrointestinal tract, including the stomach, intestines, and liver. Additionally, the endoderm gives rise to the lungs, pancreas, and thyroid gland.
2. Mesoderm: The mesoderm is the middle germ layer and develops into several structures, including the musculoskeletal system, circulatory system, and urinary system. It gives rise to the muscles, bones, cartilage, and connective tissues of the body. The mesoderm also forms the heart, blood vessels, kidneys, and reproductive organs.
3. Ectoderm: The ectoderm is the outermost germ layer and gives rise to the nervous system, as well as the epidermis (outer layer of the skin). It develops into the brain, spinal cord, and peripheral nerves. The ectoderm also forms the sensory organs such as the eyes, ears, and nose. Additionally, it gives rise to hair, nails, and certain glands like the sweat glands.
In summary, the endoderm forms organs of the digestive and respiratory systems, the mesoderm gives rise to structures of the musculoskeletal and circulatory systems, and the ectoderm develops the nervous system and outer coverings of the body.
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Which of these statements is a scientific question that might be asked about
this food chain?
A. How would the populations of the fish change if shrimp started
eating fish?
B. Do mackerel eat more tuna or more shrimp in one day?
C. Where in the ocean do shrimp find the plankton that they eat?
D. How would a change in the population of shrimp affect the
populations of mackerel and tuna?
Answer:
A
Explanation:
A, because there's a food chain that's going to Plankton to shrimp and so on. That would be a scientific question they might ask about. It's also related to what the question is asking about and it's a more simple answer. I wouldn't think B or C is what they would ask about because it's not really related to the food chain. For D, it's a really good question. But, the food chain only shows a Plankton going to shrimp and so on. D is a bit more into deep thought and it doesn't really relate to the picture either.Metamorphic rocks tend to show the same properties as the rocks they were formed from Question 3 options: True False
defend Human Evolution against Scientific Creationism
Answer: According to the National Academy of Sciences (NAS), a scientific theory is “a well-substantiated explanation of some aspect of the natural world that can incorporate facts, laws, inferences, and tested hypotheses.” No amount of validation changes a theory into a law, which is a descriptive generalization about nature. So when scientists talk about the theory of evolution—or the atomic theory or the theory of relativity, for that matter—they are not expressing reservations about its truth.
Explanation: The theory of evolution, meaning the idea of descent with modification, one may also speak of the fact of evolution. The NAS defines a fact as “an observation that has been repeatedly confirmed and for all practical purposes is accepted as ‘true.’” The fossil record and abundant other evidence testify that organisms have evolved through time. Although no one observed those transformations, the indirect evidence is clear, unambiguous and compelling.
Use the drop-down menus to complete the sentence below. A is an organism that may be eaten by a .
Answer:
A
✔ primary consumer
is an organism that may be eaten by a
✔ secondary consumer