Of the following, which phrase best describes the term taxonomy?

the study of the digestive system

the science of classification

a group of archaeans that live in deep-sea trenches

a chair, a bed, and a toothbrush

explanation:

i was told this before by a teacher, so yeah

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

this is a good question! i'll do some research and come back when i have the answer!

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.