Two species of frog mate in the same pond. One breeds in early summer and one in late summer. This is an example of what kind of reproductive isolation?

What is one physiological consequence of using sweets as rewards for good behavior? Children can grow to dislike sweets and then not have a reason to behave well. Children can grow to be dependent on sweets.

River systems on the western side of the rocky mountains flow into the pacific ocean / river systems on the eastern side of the rocky mountains flow in the opposite direction, into the atlantic ocean. what are the rocky mountains called? a.

In observing epithelial cells under a microscope, the cells are arranged in a single layer and look tall and narrow, and the nucleus is located close to the basal side of the cell. The specimen is what type of epithelial tissue? A. Columnar B.

How is SI unit related to binomial nomenclature?

At which type of boundary does tension often occur? A.) Convergent B.) Divergent C.) Subduction D.) Transform

Cartilage is part of the skeletal system. True False

Which is made up of organic molecules? copper electrical wires plastic storage containers table salt antacid

How does nitrogen leave a food chain? A. Primary consumers eat nitrogen-containing green plants. B. Producers absorb nitrogen-containing nutrients by their roots. C. Decomposers break down nitrogen-containing waste material from primary consumers. D.

Diffusion is important for living organisms because ...

What does dichotomous means when classifying objects or organisms?