Which supports the hypothesis that life has changed over time? a. organisms differ from one part of the world to another. b. the atmosphere of the early earth was different from today’s atmosphere. c. prokaryotic cells lack both a nucleus and membrane-bound organelles. d. fossils of ancient organisms differ from modern forms of life.

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

Which process can increase the rate of greenhouse gas emissions into the atmosphere in response to a decrease in albedo

Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data