Why doesn't the enzyme pepsin (present in the stomach) work in the small intestine? Select one: a. The enzyme deteriorates due to change in temperature as it enters the intestine. b. The enzyme deteriorates due to lack of substrate molecules in the intestine. c. The enzyme deteriorates due to the basic pH environment of the intestine.

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.