A bird species is known for its unusual mating behavior. Not much is known about the cause of this behavior. What could you study to better understand the proximate basis of this behavior? (check all that apply).

The and the gall bladder work together to produce, store, and use bile to digest a) liver; fats b) stomach; fats c) appendix; food. d) pancreas; sugars

Students taking a clep exam can earn between college credits, depending on the college's policies.

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.