What separates the unsaturated zone and the saturated zone in an aquifer?

Why do you think the brain is designed to handle tasks, like keeping your heart beating without you having to think about it?

The angle of incidence is always greater than the angle of reflection. t/f

The type of bond that forms between water molecules, and contributes to cohesion is a (n)

Three coyotes per square kilometer is an example of population density. true or false

An animals genetic makeup can influence its behavior true or false

As part of a science experiment, Jose did a test for starch on a slice of apple and a slice of potato. The yellow-orange iodine solution stayed the same color when it was put on the apple, but it became black on the potato.

What's the difference between transgression and marine regression

In DNA adenine levels were equal to thymine levels and cytosine levels were equal to guanine levels.

In this field of sunflowers, variation exists. Some flowers are tall, others short, and finally some plants are an intermediate height. The tallest plants shade the shorter; the taller plants are pollinated first.

What is a major use for the water humans are withdrawing from the ground?