__________ is the arrival of pollen grains on a receptive stigma. Fill in the blank(s) with the appropriate word(s)
ANSWER: Pollination
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J. H. Connell proposed that competition occurred between barnacle species; he based that on:
a. the observed distribution of the species and environmental measurements. b. laboratory test he had concluded. c. a conversation with other scientists. d. the observation that they were in the rocky intertidal. e. laboratory observations of their fighting behavior.
A milkweed plant discourages consumption by herbivores by
a. exuding a toxic sap. b. developing an appearance that mimics an undesirable plant. c. having hairy leaves. d. producing an undesirable scent. e. having thorns.
What is the consequence of a mutation in the recA gene in bacteria?
What will be an ideal response?
What is causing the seawater to become more acidic?
A. CO2 dissolves in solution. B. Helium dissolves in solution. C. H2 dissolves in solution. D. HCl dissolves in solution. E. Cl- dissolves in solution.