Fill in the blanks: When your cause-effect can be used to evaluate a about a phenomenon, scientists call it a .

What is the problem in this article? what solution does the article propose?

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei

Cancer cells spread to other parts of the body by entering the bloodstream. which of the following organs could prevent a cancer cell in the bloodstream from spreading, and why? a. the spleen, because it releases lymphocytes into the blood b. the peyer's patches, because they release lymphocytes into the blood c. the lymph nodes, because they release lymph into the blood d. the thymus, because it releases lymph into the blood