When clouds trap heat emitted from Earth's surface, they are acting as

a. Heat shield

b. Magnet

c. Greenhouse gas

d. Satellite

Which type of organic compound is generally not soluble in water and makes up an important part of biological membranes?

According to the theory of natural selection, what will most likely happen to a species that exhibits variation in physical traits? A) the species will separate into many different species.

What must happen before a cell can begin mitosis?

If a gamete contains 5 chromosomes, how many chromosomes will a typical body cell contain? does the number of chromosomes change or remain the same just before mitosis (which is after chromosome duplication) ?

What characteristic do all members of Eukarya have that members of Eubacteria do not have?

Potato plant, which organ is used primarily for food storage rather than food production? A) flower, B) root, C) stem, D) left

Which of the following is an example of an extended product responsibility? Select one: a. ecotourism b. soft loans for business planning to implement environmental products c. the use of recycled wood products in the manufacture of new products d.

What is an organism that lives on or in another organism and uses the other organism for nourishment to the detriment of the host organism?

If I turn my computer off at least once a week, it will run faster. What is the independent variable? What is the dependent variable? What are some controlled variables?

Which process is a "build up" process