Which of the following is an example of biological weathering?

A

animals burrowing in the ground

B

feldspar reacting with water to form clay

C

water freezing and expanding cracks in a rock

D

acidic water dissolving soluble rocks and minerals

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Match each description with the correct form of energy. 1. energy of an object's position above the ground. 2. stored in the bonds of atoms and molecules 3. stored in the nucleus of an atom 4. energy of vibrating molecules 5. movement of objects used to do work 6. created by vibrations in electric and magnetic fields chemical energy mechanical energy heat gravitational energy light nuclear energy