Unmanned space exploration is preferable to the use of manned vehicles for all of the following reasons except

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.

What is a dendrite and what does it do?

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above