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jarptica [38.1K]
3 years ago
7

Most dissolved carbon in the ocean is used to form which structure in marine organisms?

Biology
2 answers:
m_a_m_a [10]3 years ago
8 0

Answer:

D

Explanation:

Photosynthesis by tiny marine plants (phytoplankton) in the sunlit surface waters turns the carbon into organic matter. Many organisms use carbon to make calcium carbonate, a building material of shells and skeletons

kvv77 [185]3 years ago
8 0

Answer: The skeletons of coral polyps.

Explanation:

The photosynthesis by the aquatic plants, atmospheric carbon dioxide dissolved in the oceanic water, the decomposed and degraded matter of animals and plants can increase the concentration of the carbon dioxide in the oceanic water. This carbon dioxide can be useful to develop the coral reef the hard skeleton structure composed of calcium carbonate by the colonies of the coral polyps.  

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In a Hardy-Weinberg population with two alleles that show complete dominance, the frequency of the recessive allele is 0.4. What
Flura [38]

The correct answer is E)52

When there is Hardy-Weinberg equilibrium like in this case of a single locus with two alleles denoted A and a with frequencies f(A) = p and f(a) = q, the expected genotype frequencies under random mating are f(AA) = p² for the AA homozygotes, f(aa) = q² for the aa homozygotes, and f(Aa) = 2pq for the heterozygotes. Let's put that A is dominant and a is recessive allele. In Hardy-Weinberg equilibrium we have:

p²+2*p*q+q²= 1     p+q=1      p=1-q

f(a) =0.4=q            q²=0.4²=0.16=16%    

p= 1-0.4=0.6         p²=0.6²=0.36=36%

Percentage of a homozygous genotype in the population is 16%+36%=52%




5 0
3 years ago
Consider the parts of the digestive system, particularly the place where water is removed before feces are excreted. Which organ
Phoenix [80]

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The colon has a large surface area and plays a major role in the reabsorption of fluids and the processing and formation of waste which it pushes towards the rectum to be expelled.

Diarrhea is a condition which is characterized by frequency of bowel movements and passage of loose and watery stools. It has various causes most of which affects the normal functionality of the colon thereby limiting it's ability to reabsorb water and fluids. Such causes which affect the colon include; Bacterial infections, laxative abuse, diseases of the colon such as ulcerative colitis and Crohn's disease etc.

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The answer is D. Hope this helped...
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If DNA is shared it helps put the pieces of the tree together.

Explanation:

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