A reason an automobile engine is not considered to be living is that it is not able to
A. utilize energy.
B. change its activities.
C. make copies of itself.
D. utilize chemical reactions.
C. make copies of itself.
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What is the most widespread extractive seafloor mining operation?
a. Sulfides b. Sand and gravel c. Salt and water d. Manganese nodules
The ____ of the eye focuses light on the eye's
photoreceptors. In the above diagram of the eye, which letter identifies it?
a. retina; C b. lens; B c. lens; A d. fovea; D e. retina; B
Which of the following has been correlated
with the ability of rats to cope with stress as adults? a. A nurturing mother. b. The number of siblings they have. c. The temperature they are raised in. d. The altitude they are born at. e. All of these.
In itself, a flood that washes away an entire population of rabbits is
a. a density-dependent factor. b. a limiting factor dependent on the individuals. c. a consequence of exponential growth. d. density-independent. e. a result of natural selection.