Species with disproportionate influences on their ecosystems are called
A) dominant species
B) keystone species
C) endangered species
D) natural species
B
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Which of the following locations does not currently have glaciers?
A) Norway B) Antarctica C) Scotland D) Alaska
What type of climate dominates in most of insular Southeast Asia?
A) constantly cool and dry
B) constantly cool and humid
C) constantly hot and humid
D) constantly hot and dry
E) occasionally hot and humid
Deforestation contributes to the increase in carbon dioxide in the atmosphere.
Answer the following statement true (T) or false (F)
Mutation of the V(J)D genes in somatic cells results in which of the following?
A) a failure of the immune system B) a decrease in the binding of an antigen to an antibody C) a small increase in the binding of an antigen to an antibody D) a significant increase in the binding of an antigen to an antibody