Weathering and erosion cause destruction to the fossil record. Why is this a bad thing?

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.

How many copies of genes do gametes have?