What is the main function of the cell wall?

A. store carbohydrates for later use

B. provide rigid structure for cell

C. package proteins for export

D. carry out photosynthesis

How long is the life expectancy of dolphins

How is temperature related to the physical change of a substance?

What is not an effect for space travel

Australopithecus garhi may be the ancestor of:

Treatment of FVE involves dietary restriction of sodium. Which of the following food choices would be part of a low-sodium diet, mild restriction (2 to 3 g/day) ?

What is it called when a person is in a state of deep unconsciousness from which he or she cannot be aroused?

To offset high levels of carbon dioxide which of the following is the most viable option? A. pump oxygen in using oxygen tanks B. include indoor plants C. take shorter or less breathes D. keep windows and doors closed

Steam power plants produce a large amount of extra steam. That steam is released as heat energy into the water surrounding the power plant.

Depending on the organism, the number of in a cell may change.

Complex organisms develop specialized tissues as a direct result of which of the following processes?