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olga2289 [7]
3 years ago
13

Why do human populations change?

Biology
2 answers:
nataly862011 [7]3 years ago
7 0

Answer:

Because either humans are passing away quickly or there are a lot of child births (Maybe even both)

Explanation:

Dominik [7]3 years ago
5 0

Answer:it depends on death rates which depends on population

Explanation:

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Which kingdom has 2 kingdoms that are all unicellular?
dalvyx [7]

Answer: Prokaryotes, archaea, protists, fungi, algae.

Explanation:I don’t think there are any single celled organisms that are today classified as animals. So basically I just left the animal kingdom out. Both metazoans and sponges are for the most part multicellular.

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3 years ago
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2 and 3 are too similar to distinguish because they both are saying it's been back up on several different accounts but 3 seems like a more solid answer go with 3
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Outline three examples of cycles of inorganic nutrients. For each, outline the uses of the nutrients in living organisms, its me
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The three examples of cycles of inorganic nutrients are Nitrogen, carbon and sulphur cycle.

Nitrogen is required to make amino acids and DNA in organisms. Carbon is the main component of glucose through which organism make energy, about 18 per-cent of the human body comprises carbon. Sulphur is an important constituent of some proteins, amino acids and enzyme cofactors.

Explanation:

The biogeochemical cycles like the nitrogen cycle are responsible for converting nitrogen into many chemical forms as nitrates, nitrites, ammonia. This process involves degrade decomposing animal and plant matter and naturally cleaning the environment also nitrites and nitrates become biofertilizers. The plants take nitrogen through their roots and in turn primary consumer in food chain ie. organisms consume the plant and eventually releases nitrogen as a waste material, dead and decaying body to the soil and cycle goes on.

In the carbon cycle the carbon is exchanged from the atmosphere to the organisms and then again to the environment. Plants perform photosynthesis by using carbon dioxide, primary consumer eats it and gets nutrition to perform cellular respiration, in turn, gets energy which gets dissipated and stored as biomass eventually in the course consumer die and replenish the soil with carbon. The Carbon emitted will keep cycling through air, water and soil.

The sulphur cycle involves the movement of sulphur between rocks, water and living beings and plants. Plants ( producers) absorb sulphur dissolved in water and animal consume these plants to replenish their sulphur requirement. And when organism die, sulphur enter the cycle again.

There will be a transfer of these inorganic nutrients to the trophic level in food chain.

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3 years ago
A plant has a unique photosynthetic pigment, causing the leaves of it to appear reddish-yellow. What wavelengths of visible ligh
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Carotenoids absorb light maximally between 460 nm and 550 nm and appear red, orange, or yellow to sight.

8 0
3 years ago
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Which best summarizes the peppered moths in england after the industrial revolution?
Amiraneli [1.4K]
Thank you for posting your question here. Below are the choices that can be found elsewhere:

a. a new mutation allowed moths to survive 
<span>b. the light moths had an advantage </span>
<span>c. the phenotype frequency changed </span>
<span>d. moths learned to adapt to their environment
</span>
The answer is C
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3 years ago
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