What ecological consequences do introduced species have on an area?
a. They increase predation pressures on animals
b. They compete with native species.
c. All of these choices.
d. They introduce diseases.
c
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Stony, chondrite, achondrite, and stony-iron meteorite types are classified according to their
a. orbit. b. distance from the Sun. c. impact history. d. mineral content. e. coma.
Instability of radioisotopes is caused by
a. sudden temperature variations. b. environmental humidity. c. the random motion of atoms. d. the disintegration of a neutron into a proton and an electron. e. the motion of electrons and neutrons.
5% recombination is equal to ________ map unit(s) (m.u.) or centimorgan(s) (cM) of distance between linked genes
Fill in the blank(s) with correct word
The structural and functional unit of nervous tissue is the
A) dendrite. B) axon. C) neuron. D) nerve.