Answer:
They urinate a lot, so the water does not build up.
Explanation:
Freshwater fishes are fishes that live in freshwater habitat i.e. little or no salt. This means that the fishes are hypertonic (have more salt) to their external environment. Due to their hypertonicity, freshwater fishes tend to take in more water via osmosis.
Freshwater fishes, however, do not explode despite this phenomenon because they pass out the excess water via urine waste. Freshwater fishes urinate a lot, hence, the absorbed water does not build up in their bodies.
Một các thể của một loài sinh vật khi giảm phân tạo giao tử. Trong số giao tử được sinh ra người ta nhận thấy số loại giao tử mang 2 NST có nguồn gốc từ mẹ là 6. Quá trình giảm phân diễn ra bình thường, không xảy ra trao đổi chéo.
a. Xác định bộ NST 2n của loài và tên loài.
b. Tính tỷ lệ loại giao tử nói trên?
Cho rằng tỉ lệ thụ tinh của giao tử đực và cái đều là 100%. Toàn bộ các hợp tử đều phát triển thành cá thể con.
Answer:
i cant understand
Explanation:
because your language in vietnam
which of the following are human activities that can negatively impact ecosystems.
Answer:
Hey not sure if there is something that is supposed to be viewable but some common human activities that can impact ecosystems are, deforestaion, pollution, littering, fracking, spilling oil into the oceans.
Explanation:
Answer:
You didn't put a photo but cutting down trees of putting chemicals into the water/earth can harm ecosystems
Which of the following is an autotroph?
A. A consumer
B. A prey
C. A predator
D. A producer
Answer:
D) producer
Explanation:
An autotroph, or main producer, is a living creature that uses carbon from basic molecules like carbon dioxide to build complex organic compounds, usually with the help of light or inorganic chemical processes.
OAmalOHopeO
which are forms of nitrogen that are unsable by humans
Answer:
The forms of nitrogen that are unusable by us humans are the gaseous forms of N2 as they can't be used by most living things.
The forms of nitrogen that are usable by us humans are Ammonia, Nitrates, and Nitrites.
The ovals above represent mangrove islands of various sizes and distances from shore. According to the MacArthur/Wilson Island Biogeography Model, which island is expected to have the LOWEST number of insect species at equilibrium
There are few island on earth which are insect free due to atmosphere and sea breeze which do not complements the insects breed.
These islands attract tourists more because of no or very few insects, tourist have no fear of getting sick during their stay on these islands.
Antarctica is mosquito free continent. The island in Antarctic ocean are mosquito and have very few insects due to lack of stagnant water available for their breeding.
Iceland, Seychelles and few other island are insect free or have very low amount of insects there. The coral island is all surrounded by water and there is no connection of this island with the land.
There is very less stagnant water and ponds which can cause the insects to survive.
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A bat is a mammal even though it flies in air. give reason
Answer:
Bats are mammals. As the bats are warm blooded, and they can fly like the birds, bats are known as flying animal. Means they have two unique characteristics. They can fly like birds, and can give birth and suckle to their young ones like animals.
Answer:
because it has wings
Explanation:
the answer is simple
bat fly
blue whale swim
but both are mammal
Jurassic park book summary
Answer:
En una isla remota, un grupo de hombres y mujeres emprende una carrera contra el tiempo para evitar un desastre mundial provocado por la desmedida ambición de comercializar la ingeniería genética. Pero todos los esfuerzos resultarán vanos cuando el inescrupuloso proyecto quede fuera de control y el mundo a merced de unas bestias monstruosas...
Explanation:
How do animals and people cause weathering?
How do plants cause weathering ?
Answer:
Plants can cause mechanical and chemical weathering
Explanation:
Plants can cause mechanical and chemical weathering. When plants cause mechanical weathering, their roots grow into rocks and crack them.It can also happen in streets or sidewalks. When plants cause chemical weathering, there roots release acid or other chemicals, onto rocks, which then forms cracks, and breaks apart.
Animal and plant mobility is a factor in biological weathering, for instance, a plant may grow in a gap in a rock and, as its roots spread, cause the fracture to expand.
What is the cause of weathering?A rabbit may also burrow into a crack in a rock, making it wider and eventually separating the rock.
Animals and plants can act as mechanical weathering agents. In dirt that has gathered in fractured rock, a tree seed may emerge. The fissures get wider as the roots spread out, finally shattering the rock into pieces.
Even big rocks might get dislodged by trees over time, rocks are broken down by plants like moss that absorb their minerals.
Therefore, holding onto soil and rocks is another way that plant roots cause weathering, and might stop erosion.
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mention 6 substances secreted by the body
Answer:
Saliva
Lipase
Amylase
Trysin
Pepsin
Erepsin
Explanation:
Substances? Just any substances?
What is a major difference between these two types of cells?
The location of the cytosol
The location of the DNA
The presence of a plasma membrane
The presence of ribosomes
Answer:
I think the answer is the presence of a plasma membrane.
Answer: Location of the DNA :)
Carbohydrates have three different types of building blocks that differ in their
complexity and size, ranging from simple sugars to complex starches. Which of
the following foods represents the most complex carbohydrates comprised of
polysaccharides?
explain the reason for the variation in production by referring to the possible causes for variation in a population
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
which class question is this?
Describe how the earth maintains greenhouse effect ?
Answer:
The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. ... The absorbed energy warms the atmosphere and the surface of the Earth.
why must the composition of the dialysis fluid be similar to that of the blood
Answer:
Because the purpose of dialysis is to mimic blood and clean the blood because the persons kidneys dont work. If it is not similar to blood it wont work
Explanation:
Why are scientific journals considered a superior resource compared to other sources of scientific information?
I NEED HELP
Scientific journals are regarded as more superior due to the fact that they are peer reviewed.
What this means is that before a scientific journal would be approved for publishing, it first has to be reviewed by some experts in that scientific field.
What these peers do is to Approve the journal, make suggestion to the work, or they can decide to reject the work if they find it unsatisfactory.
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Scientific journals are generally specialized for distinct academic fields or subdisciplines, and they are the most important way of communicating research findings.
However, Scientific information is concerned with the creation, gathering, categorization, retention, retrieval, interpretation, transmission, and usage of data.
The major difference is that Scientific journals are peer reviewed while scientific information are merely gathering of information.
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Explain why when you exercise your heart rate change?
(less than 20 words)
Answer:
when you are exercising the muscles need extra oxygen,for this oxygen to be supplied quick the heart pumps faster which makes a quicker pulse.
I hope this helps
Answer:
During exercise, your body may need three or four times your normal cardiac output, because your muscles need more oxygen when you exert yourself. During exercise, your heart typically beats faster so that more blood gets out to your body.Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps. Generally speaking, your heart beats both faster and stronger to increase cardiac output during exercise.
--> 42. Smallest blood cells is ->
Answer:
rbc
Explanation:
hope it's helpful and have a great day ahead
How do the outer layers of cells on the underside of a leaf work to gather carbon dioxide?
The outer layers of cells on the underside of a leaf work to gather carbon dioxide by the utilization of stomata.
What are Stomata?Stomata may be defined as the presence of tiny pores in the epidermis of the leaf or stem of the plant. The fundamental function of this structure is to regulate the amount of gas exchange.
A massive amount of gaseous exchange takes place in the leaves through these pores for the purpose of photosynthesis.
The opening and closing of these stomata are regulated by the guard cells. In order to prevent water loss through such pores, plants are required to close such pores during mid-day.
Therefore, the outer layers of cells on the underside of a leaf work to gather carbon dioxide by the utilization of stomata.
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Why is water important in humans life explain
please explain gyz
What is the function of the stomata in a leaf?
Answer:
it regulates the amount of air or moisture leaving or entering the leave
Explanation:
this is because it has tiny pores which helps in regulating the moisture or heat content leaving or entering the leave
which of these resources can not be renewed? A. Solar B. Coal C. Wind D. Biomass
Answer:
coal
Explanation:
it is a non renewable energy source
trong chương trình lớp 7 các em đã học các ngành động vật nào?
Answer:
what's this can u explain me in hindi pls
Which major processes were needed for the origin of life on Earth?
Answer:
I think it's a climate
Question 6 of 10
Which statement best describes the limits of science?
O A. Science cannot answer questions about the natural world.
OB. Science cannot answer questions about what people should do.
O C. Science can answer any question.
O D. Science can answer only mathematical questions.
SUBMIT
Answer:
I think B should be the answer because science cannot tell the future
Which of the following is NOT of the major biogeochemical cycles?
A.Life cycle
B.Water cycle
C.Carbon cycle
D.Phosphorus cycle
water cycle............
The following is NOT of the major biogeochemical cycles D.Phosphorus cycle is D.Phosphorus cycle.
What is the difference between Carbon cycle and Phosphorus cycle?The major distinction among carbon and phosphorus cycle is that carbon cycle interacts with the environment while phosphorus cycle does now no longer engage with the environment. Therefore, the carbon cycle is a sort of gaseous biking while the phosphorus biking is a sort of sedimentary rocks.
As in comparison to nitrates & different macro elements, decomposers take longer time to decompose any lifeless biota into phosphates. Decomposers are organisms mainly a soil bacterium, fungus, or invertebrate, that decompose natural material. These are the motives for phosphorus cycle being the slowest biogeochemical cycle.
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How far is the moon from the sun?
Answer:
150 million kilometers
Explanation:
The Moon is approximately 150 million kilometers from the Sun on average. Because the Earth orbits the Sun at a distance of roughly 150 million kilometers, this is a fascinating coincidence. Because the Moon orbits the Earth, it follows the Earth's orbit around the Sun.
OAmalOHopeO
Natural selection generally results in ________. Group of answer choices an increase in the size of a population a population that is adapted to its current environment a population that is better adapted to a future environment increased genetic variation
Answer:
Natural selection, process that results in the adaptation of an organism to its environment by means of selectively reproducing changes in its genotype, or genetic constitution
hope it helped!
Natural selection generally results in a population that is adapted to its current environment. The correct option is B.
What is natural selection?Natural selection is the process through which population numbers of living organisms adapt and change.
Individuals in a population are naturally variable, which means they differ in some ways. This variation indicates that some people have traits that are better suited to their environment than others.
As long as there is some difference between them and that difference is heritable, there will inevitably be a selection of individuals with the most advantageous differences.
Natural selection is a process of evolution in which lifeforms that have beneficial traits procreate more effectively than those lacking the traits, leading to an increase in the frequency of the advantageous things over time.
Thus, the correct option is B.
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The property of matter that allows a solid to flow is____.
1. Sublimation
2. Conductivity
3. Subduction
4. Plasticity
Answer:
hey mate I am 90 per cent sure that ans is option 2 ) conductivity
b3coz
Conductivity in metal is a measure of a material's ability to transmit heat, or electricity (or sound). The reciprocal of conductivity is resistance, or the ability to reduce the flow of those. ... Metals conduct electricity by allowing free electrons to move between the atoms
Answer:
2. Conductivity
Explanation:
Conductivity allows atoms to flow in solid by passing on vibration energy when any form of energy is applied.
Water pollution is an environmental factor due to rapid population growth.(True or False)?
Answer:
False
Explanation:
Water pollution is caused by factory workers
According to the food pyramid what contains large amounts for the making of cell membranes
Fatty acids
Explanation:
Essential fatty acids need to be consumed through the diet and are important building blocks of cell membranes.
As carnes lombinas e animais de bom porte alimenticio e apropiados para "consumo"(no caso , que pode ser ingerido).
