Because in wet climates the limestones break due to the rain, and dry climates do nothing to the limestone.
A catalyst works by providing an alternative reaction pathway to the reaction product. Furthermore the rate of reaction is increased.
Answer:
A
Explanation:
Secretions from the liver and pancreas enters the small intestine through a segment of the intestine called the duodenum. The secretions aid in the final and complete digestion processes. The lipid digestion is aided in the small intestine through the secretions by emulsifying fats and completing necessary steps.
However B which contains segmental contractions is a peristaltic movement( found also in the oesophagus)isn’t peculiar to the small intestine. The large intestine also experiences this.
This is because of natural selection; since polar bears live in a rough environment, natural selection gives them more fur, more muscle, and can go longer without food