Which of the following is an example of energy changing from one form to another? A:A Rock B: A Fire C: a desk D: a pen

In a species of grasshoppers, they can either have green or brown coloring. The environment that they live in usually receives lots of rain and all the plants are nice and green.

One hypothesis regarding the extinction of dinosaurs is that a meteor hit the earth causing an explosion so powerful that dust blocked the sun. consider the model above and explain why would this have caused mass extinction.

Oceanographer that's the real answer

How can you use a number line to represent solutions of an inequality

Geologists discovered many Cenozoic fossiliferous rocks in Virginia's Coastal Plain. A large number of fossil clams, snails and sand dollars can be found in these marine rocks; along with fossilized whale bones and shark teeth.

Using a broom to clean sidewalks and driveways is a way to reduce water pollution

The model shows two types of proteins, channels and carriers, allowing the movement of molecules into the cell.

Temperature, pH, and ionic concentrations each play an important role in the proper functioning of enzymes.

What was the purpose of the vinegar in the third trial? a. test the effect of raising pH on enzyme action b. test the effect of lowering pH on enzyme action c. serve as a control d. served no purpose

How do substances move in passive transport?