All warts caused by human papillomaviruses are linked to cancers.
Answer the following statement true (T) or false (F)
False
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As part of the previous experiment, you monitor the growth of tree A (ants blocked from the canopy) and tree B (ants are not blocked from the canopy) over the three-year period. You expect __________ because _________
A. higher growth in tree A; the number of aphids will fall because ants are absent, and aphids are parasites of the tree B. higher growth in tree B; the natural environment is always optimized so any change (e.g., blocking the ants from tree A) will reduce the performance of all members of the network C. no change in growth; due to the size difference between the trees and the insects, the presence or absence of insects will not have an effect on tree growth
Which of the following factors is NOT a density-dependent regulator of population size?
a. competition for food b. limitation of nesting sites c. disease d. parasitism e. drought
Which type of mutation will have the most evolutionary consequence?
A. a mutation in a stomach cell B. a mutation in a kidney cell C. a mutation in a lung cell D. a mutation in a germ-line cell
A terrestrial vertebrate that has scales and a three-chambered heart is a(n)
A) reptile. B) amphibian. C) mammal. D) bird. E) lobe-finned fish.