According to the graph of U.S. municipal solid waste, which type of disposal method emerged in the late 80's?
A. Composting
B. Recycling
C. Combustion
D. Sanitary Landfill
E. Secure Landfill
Ans: A. Composting
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In a human male, how many total chromatids are present in cell number 4?
a. 2 b. 4 c. 23 d. 46 e. 92
The organism that causes malaria
a. is a multicellular protozoan. b. is the anopheles mosquito. c. attacks the protein globin in skin cells. d. is a single-celled protozoan. e. causes the overproduction of red blood cells.
Thanks to the Human Genome Project, we now know that humans possess approximately how many
genes? a. 100,000 b. 50,000 c. 21,500 d. 10,000 e. 5,000
The collection of a substance in an organism's body tissues that becomes more concentrated in organisms higher on a particular food chain is called
a) concentration b) smog c) pollution d) biological magnification