The cardiovascular system consists of ________.
A. The heart
B. The blood
C. The blood vessels
D. All of the above are parts of the cardiovascular system
Answer: D
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Space is not a limiting factor on a rocky intertidal beach
Indicate whether the statement is true or false
You can painlessly wade into a pool, but doing a belly flop off of the high diving board hurts because of
A. cohesion in water. B. water's high boiling point. C. water's high density. D. water's neutral pH. E. adhesion in water.
The coding sequence of the green fluorescent protein gene (GFP) is placed under the control of an enhancer active in neurons. When this transgene is introduced into flies, GFP will be expressed in
A) all neurons or a subset of neurons. B) all fly cells that have the transgene. C) all cells in the early embryo and then GFP will be silenced. D) all cells in the late embryo after neurons form.
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.