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Inessa05 [86]
4 years ago
8

The carbon phosphorus and nitrogen cycles are collectively referred to as __________ cycles

Biology
1 answer:
NeTakaya4 years ago
6 0

Answer is Biogeochemical cycles.

In an ecosystem biotic (living) abiotic (non-living) components constantly interact each other. During these interactions, there is a transfer of nutrients between living organisms and the non-living environment. Thus, there is recycling of inorganic matter between living organisms and their non-living environment. This cycling of matter is called biogeochemical cycles.

 

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Use the word bank below to complete the passage below describing mitosis and meiosis. All words will be used at least once and m
ExtremeBDS [4]

Answer:

1. diploid ,Mitosis

2. mitosis, meiosis

3. diploid, sister chromatids

4. haploid, homologous chromosome

5. haploid, sister chromatids

Explanation:

1. The Giant Panda has 42 chromosomes but these chromosomes exist in the form of homologous pairs therefore the Panda are diploid organisms. The somatic cells of the Panda undergo mitosis like skin cells.

2. The Germ cells are present in the testicles of the Panda which makes an exact copy of themselves by mitosis but these germ cells undergo meiosis to produce sperms.

3. The Mitotic division forms two daughter cells with the same genetic material because the sister chromatids of homologous chromosomes move to the opposite pole.

4. The meiosis I am also known as reductional division as the homologous chromosome separate and move to opposite poles during meiosis I and the ploidy changes from diploid to haploid.  

5. During meiosis II, the sister chromatids of a chromosome separate and move to the opposite poles as a result of this the haploid cells are formed.

7 0
3 years ago
How and why has the air quality changed in the United States over the last 30 years?
Mars2501 [29]

Answer:

It has gotten worse.

Explanation:

In the past 30 years, air quality in the United States has declined almost exponentially. Pollution is the main reason for the declination of air quality in the United States, but there are different kinds of pollution, including light pollution, noise pollution, air pollution, water pollution, etc. Air pollution can be caused by primary or secondary pollutants. Primary pollutants include carbon, nitrogen, and sulfur oxides as well as just general particles in the air. Secondary pollutants are formed when pollutants are exposed to sunlight via chemical reactions.

6 0
3 years ago
What embryo-produced hormone maintains progesterone and estrogen secretion by the corpus luteum through the first trimester of p
7nadin3 [17]

Answer:

Human chorionic gonadotropin

Explanation:

Human chorionic gonadotropin is a hormone produced after the implementation with the function to promote the maintenance of the corpus luteum during the beginning of pregnancy. This is important because hormones produced by corpus luteum, such as progesterone enrich the uterus with f blood vessels so that it can sustain the growing fetus.

Human chorionic gonadotropin is often used in pregnancy tests, since its presence indicates pregnancy.

6 0
4 years ago
How can monomers make larger molecules
Ilia_Sergeevich [38]

Answer:

The monomers combine with each other by covalent bonds to form larger molecules known as polymers.

Explanation:

5 0
3 years ago
Think about the DNA coding sequence of a gene. If an A were swapped for a T, what kind of mutation could it cause and why?
sleet_krkn [62]

Answer:

The answer is D.

Explanation:

The given situation in the question where an Adenine nucleotide is swapped for a Thymine nucleotide, which as stated are complimentary of each other just like guanine and cytosine, can cause all three types of mutations, frameshift nonsense, frameshift missense and silent because the situation is not specific to either of them. There is no information whether the change resulted in a change in the amino acid structures or not. In this case the best answer is D.

I hope this answer helps.

7 0
3 years ago
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