How often is carbon dioxide cycles through the atmosphere

A student plans to measure the circumference of a balloon at various temperatures to determine how temperature affects the volume of a gas. What is the independent variable in this experiment?

In an ecological pyramid, what happens to energy, biomass and number of species as you move up?

What is a benefit of using nonrenewable resources?

Atmosphere It's the sand, rock, or the big mountain top. 2. biosphere It's the dark, deep, blue seas and oceans. 3. cryosphere It's all the ice. 4. lithosphere It's you, me, the dog across the street, and the tree in the front yard. 5.

What do cells have in common

Which of the following structures is found in both plant and animal cells? A. cell membrane B. chloroplast C. cell wall D. large, water-filled vacuole

Which letter represents an organism that could only be a primary consumer?

Muscle cells in athletes often have more mitochondria than muscles cells in non athletes based on the observation it can be inferred that the muscle cell in athletes

1. What can all rocks be broken down into? 2 What kind of rock does magma cool and harden into another?

Why might it be beneficial for governments to restrict the types of plants and animals that individuals can keep as pets in a particular environment?