8. On page 8 of your textbook the authors describe an experiment in which the amount of butter is changed between two cookie recipes. Imagine a scenario in which a person also changes the type
of flour used (whole wheat flour versus regular bleached flour). Is this still an effective
controlled experiment? Briefly explain your answer either way.

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.

not sure what it is

because photosynthesis could not occur (apex)

answer an inhibitory neurotransmitter in the brain;