An immune response is primarily due to the body's white blood cells

recognizing?

Oxygen-rich blood from the lungs enters the heart at what structure

How can producers make the most profit? check all that apply?

An organism that gets energy by eating meat or living or dead things

List 3 types of solar activity and give a brief description of each.

What are the advantages of sexual reproduction over asexual reproduction?

Lymphocytes that are clones of activated B cells or T cells that enhance resistance to future infection are called: a. memory cells. b. clones cells. c. enhanced cells. d. recall cells.

A group of scientists are studying the internal parts of a cell. Which microscope is most appropriate for these scientists to use?

Which characteristic do all protists have? A They all make or consume food. B They all survive in any environment. C They are all unicellular. D They all have flagella.

The Greatest salt lake in Utah has a saline content that can be up to ten times greater than the ocean. It is fed by three freshwater tributaries. What causes it to have such a high concentration of salt A.

What do the two types of fermentation differ