Which factors contribute most to intraspecific competition?
A. a species' rate of reproduction and the
carrying capacity of the environment
B. predation and parasitism
C. mutualistic relationships
D. a species' fundamental niche and abiotic
surroundings
E. increased diversity of adaptations and
resource partitioning.
A
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The I bands in skeletal muscle are composed of ____
a. discs to which thin filaments are anchored b. stacked thick filaments along with the parts of thin filaments that overlap both ends c. thin filaments but no thick filaments d. thick filaments but no thin filaments e. stacked thin filaments along with parts of thick filaments that overlap both ends
In _____, a hypha has few or no cross-walls
a. zygomcyetes c. club fungi b. sac fungi d. all of these
Which of the following is the most direct measure by which ventilation is regulated?
1.carbon dioxide levels in the blood
2.acid levels in the cerebrospinal fluid
3.oxygen levels near the carotid bodies
4.oxygen levels near the aortic bodies
Place the following in developmental order beginning with the earliest event
1) limb buds appear 2) face begins to look human 3) muscles differentiate 4) downy hair covers the fetus 5) sex can be determined by external inspection a. 3, 1, 2, 4, 5 b. 1, 3, 4, 2, 5 c. 1, 3, 2, 5, 4 d. 1, 2, 3, 4, 5 e. 1, 3, 5, 2, 4