In snapdragons, there is an allele for flower color, CW, that produces no pigment. A plant with the genotype CWCW will produce _____________ flowers.
a) no
b) red
c) white
d) black
e) pink
Ans: c) white
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Which of the following is the ability of an ecosystem to remain in equilibrium despite disturbances?
a. resilience b. restoration c. resistance d. equidistance
What causes the moist air of tropical rainforests?
A) warm air rising at the equator, cooling and condensing, and falling to Earth B) warm air sinking, moving to the equator, and raining C) cool air rising, evaporating, and forming cloud cover D) cool air sinking, condensing, and falling as rain
The mass number of an atom is determined by the combined masses of its ____.
A. neutrons and protons B. neutrons and electrons C. protons and electrons D. protons, neutrons, and electrons E. neutrons, nucleus, and electrons
The loss of ________ that occurs at each trophic level places a limit on how many top-level carnivores a community can support.
A. CO2 B. water C. light D. O2 E. energy