Which statements are true of geothermal energy? check all that apply. it is constantly being produced inside the earth. hot water from hot springs or reservoirs is used in heating systems. it is created by energy from the sun. it can be used to generate electricity. it can be unreliable because it is affected by the weather. the united states is the world leader in generating power from geothermal energy.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

What is the following best defines climate?