The rift valley in africa is an example of what type of plate motion?

a. the african plate is breaking apart to form two separate plates.
b. the african plate is colliding with the arabian plate.
c. the eurasian plate is converging with the african plate.
d. a transform boundary is causing earthquakes there.

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

What happens during the experiment stage of the scientific method

Why has two different alleles for the same trait?