Any chemical, physical, or biological change in the environment that harms living organisms is called
A. nitrification.
B. an upwelling.
C. deforestation.
D. ozone depletion.
E. pollution.
E. pollution.
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In an atom, the number of neutrons determines most specifically the ________.
A. chemical properties B. chemical element C. ion state D. isotope
IgE is the:
a. first antibody produced when an invading microorganism is initially encountered. b. antibody that is associated with various parasitic infections. c. antibody that is secreted in various body fluids and primarily protects those body surfaces lined with mucous membranes. d. second antibody produced when an in-vading microorganism is initially encoun-tered and the most abundant.
The primary source of energy for primary production is:
a. high temperatures. b. sunlight. c. hydrogen bonds. d. glucose. e. carbohydrates.
A pedigree is useful because it ________
A) shows the genotype of a particular individual B) can help predict the chances of an offspring displaying a particular trait C) shows the phenotype of one individual D) can look at multiple traits at one time