Answer;
The large intestine is much wider than the small intestine, but it is also much shorter. The small intestine is the longest part of the digestive system.
Explanation;
The small intestine is a muscular tube with three parts; the duodenum breaks down the food, the jejunum and the ileum absorb nutrients and send them into the bloodstream.
The reason why the small intestine is longer than the large intestine and any other part of the digestive system is to ensure maximum and complete absorption of nutrients to the blood stream.
D.mitochondria because animal cells also contain mitochondria
I have read the question several times and I believe "A.The kelp draws nutrients from the water rather than the soil, which it does not have available." would be your answer.
Although it is true that kelp is temperature sensitive, the question states that "They use a temperature regulation system to keep the water temperature at about 12°C." So even with the added addition of sunlight, I think the temperature still stays generally the same. And as long as the temperature is between 5-20 C degrees, the kelp should be okay.
However, kelp does not work the same as most land plants, kelp does not have a root system. It instead has a "holdfast" anchoring system that does not transport nutrients. So how does kelp get nutrients? From the water directly. Since the question says nothing about nutrients in the water, and directly talks about nutrients in the soil, we can assume that their is no nutrients in the water (only in the soil). Making A our answer.
This is a copy/pasted answer from a question I also answered.
brainly.com/question/4540702
<span>When the idea of evolution originated, scientists used objects that were similar. An example being given would be that of monkeys and humans were much more alike than dogs and monkeys. When scientists realized how minor those differences were, it enabled them to study how close those relationships actually were. Public knowledge grew about cells and DNA; scientists also knew how it could be used to determine similarities and differences in proteins in humans and animals. Tying all of these methods together will create an evolutionary map.</span>
