Pollution that falls out of the atmosphere that originated from a factory is nonpoint, or secondary source, pollution with the factory being the point, or primary source, of the pollution. is acid rain a point source (primary) or nonpoint source (secondary) of pollution? what is the effect of acid rain on the environment?

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen

Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing

What is the difference between a meteoroid and a meteor?