Which of these cell types is NOT an immune cell?
A.
leukocyte
B.
phagocyte
C.
lymphocyte
D.
erythrocyte
A patient's immune system is able to recognize invading cells but is unable to remove these cells efficiently. This patient most likely has a decreased number of
A.
T cells.
B.
B cells.
C.
lymphocytes.
D.
phagocytes.

What type of competition exsist between two species. turtles and fish

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics

Which description provides the best objective summary of the article in the passage?