How long can a person live without food and drinking only water?

Which of the following distinguishing living things from nonliving things

What system is charged with maintaining a state of wakefulness?

A cross between a male horse and female donkey results in reproduction of a mule, which does not resemble either oft he parents. What is the reason for this

Joel wanted to test the concentration of salt in red blood cells. He had five flasks of saline at different concentrations as well as sheep red blood cells.

Which disorders can be caused by inbreeding? 1) albinism-a genetic disorder that causes the absence of skin pigment 2) bone fracture-an injury to the bones from a fall or an accident 3) flu-a disease caused by a virus 4) hemophilia-a genetic

Which are the main causes of crack growth in rocks over time?

There is a process that results in the feature ocean trench, what is the name of this process? Explain the process in detail. Be specific.

The rock cycle is not used to illustrate

Darcy and Raul are having difficulty conceiving a child. Darcy ovulates every 28 days, and Raul's sperm count is normal.

How can organisms create their own energy? Explain your answer.