They could look for similarities in the DNA or protein structuresof the organisms<span> and similarities in early development</span>
Well the earth's atmosphere is kept around the earth by gravity its a little different than a green house but its the same idea .the gravity keeps a barrier between space and the earth and it acts like a green house the sun goes threw the atmosphere and is magnified by the humidity and t reflections which are the clouds. it all kept around the earth by the pressure the gravity causes and it also contains any and all pollutants we release into the air. the barrier the gravity makes is like the glass in the green house .the plants and trees on the earth produce the oxygen we breath and is kept down around the earth because the earth spins and causes centrifugal force
Answer:
Hippocampus is a brain structure embedded deep in the temporal lobe of each cerebral cortex. It is an important part of the limbic system, a cortical region that regulates motivation, emotion, learning, and memory.
Explanation:
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The ileum contains villi that project into the lumen and increase the amount of surface area.
Villi are small finger-like structures that project into the lumen of the small intestine. Villi increase the surface area of the intestinal walls for easy and quick absorption of digested food with the addition of digestive secretions. Villi vary in length from about 0.5 to 1 mm. They are usually found in large numbers at the beginning of the small intestine and they reduce toward the end of the tract.