The level of organization that encompasses all regions of Earth’s crust, waters, and atmosphere in which organisms
live is known as ____.
a. the biosphere
b. a community
c. an ecosystem
d. a population
e. an organism’s habitat
ANSWER: a
Biology & Microbiology
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Fossils are found only in
a. metamorphic rocks. b. igneous rocks. c. sedimentary rocks. d. crystalline rocks. e. radioactive rocks.
Biology & Microbiology
Why is morphological convergence not a good explanation for vertebrate forelimbs? What will be an ideal response?
Biology & Microbiology
Within a single neuron, the direction an impulse follows is
a. dendrite >>> axon >>> cell body. b. axon >>> dendrite >>> cell body. c. dendrite >>> cell body >>> axon. d. cell body >>> dendrite >>> axon. e. cell body >>> axon >>> dendrite.
Biology & Microbiology
All chordates have pharyngeal gill slits at some point during their development
Indicate whether the statement is true or false
Biology & Microbiology