A testable idea about a set of observations or natural phenomenon.

Question 4 options:

observation

hypothesis

theory

graph

What is produced by the alpha cells of the pancreas?

Mountains are usually formed by: movement of the earth's crust weathering away of land placement of eroded land volcanic explosions

What type of isolation occurs when species are spread too far out over an area? behavioral isolation geographic isolation temporal isolation broad geographic range

It is winter where Jenna lives. It's been snowing all day, but now the snow has changed to sleet and then to freezing rain. What is happening to cause these changes? In your answer, explain how snow, sleet, and freezing rain form.

What would most likely happen if there were no condensation stage in the water cycle? Water could not convert from a gas to a liquid. Water could not convert from a liquid to a gas. Water could not convert from transpiration to evaporation.

Why did Crocodiles survive the K/T extinction?

The rate at which materials enter and leave thru the cell membrane depends on the cells • A. volume • B. weight • C. mass • D. surface area

How much time passed between the appearance of the first prokaryotic cells and the emergence of multicellular organisms?

Inhibin secreted by granulosa cells selectively inhibits secretion of FSH by the pituitary a. True b. False

How does the structure of fats enable them to hold so much energy?