If an animal is an ectotherm, it has

• a skeleton on the outside of its body

•a skeleton on the inside of its body

•a body that regulates its own internal temperature

•a body that does not produce much internal heat

What steps have power plants taken to reduce the amount of sulfur oxides released into the air?

A mummy is discovered whose stone tomb includes cloth, food, and other organic remains. what dating method would most likely be used to date the tomb?

What word part means slow? A. - osis B. - stomy C. peri- D. brady-

The Calvin cycle: was named after an American biochemist does not require light energy to work produces glucose and water all of the above

If the recessive allele for an x-linked recessive disease in humans has a frequency of 0.02 in the population, what proportion of individuals in the population will have the disease? assume that the population is 50 : 50 male:female.

Why is the tundra treeless? lack of sufficient water permanently frozen ground winters too harsh too many fires

Select the correct statement about antigens. A. One antigen may have many different antigenic determinants and may therefore cause the formation of more than one antibody. B. Only small antigens exhibit reactivity. C.

Which molecule is the source of basic material used for the production of glucose in the calvin cycle?

Why do cells need to be able to transport substances across their membrane

Which is a characteristic of all waves?