How do scrubbers reduce the impact of coal use?
a. scrubbers remove all harmful emissions from smoke before it leaves the plant.
b. scrubbers remove nearly all carbon dioxide from smoke of coal power plants.
c. scrubbers remove sulfur from the smoke of coal power plants.
d. scrubbers remove large particulates from the smoke of coal power plants.

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