Regular, consistent intervention, such as some modern logging practices, may create which type of stable community?
A) immature
B) evergreen
C) forest
D) recovered
E) varied
A
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The mutualism of Azolla-Anabaena is useful for
A) aquaculturalists. B) corn farmers. C) rice farmers. D) tropical forest community succession.
Microbial fuel cells are an emerging technology whereby ________ are donated to an anode during heterotrophic bacterial respiration.
Fill in the blank(s) with the appropriate word(s).
The process in which oxygen, not carbon dioxide,
becomes attached to RuBP a. is the Calvin-Benson cycle. b. is the C3 pathway. c. is the C4 pathway. d. does not occur in plants in hot, dry climates. e. is photorespiration.
In birds, sex is determined by a ZW chromosome scheme that is much like the typical XY scheme seen in humans and many other organisms, except that the system is reversed:
Males are ZZ (similar to XX in humans) and females are ZW (similar to XY in humans). A lethal recessive allele that causes death of the embryo occurs on the Z chromosome in pigeons. What would be the sex ratio in the offspring of a cross between a male heterozygous for the lethal allele and a normal female? A) 1:1 male to female B) 3:1 male to female C) 1:2 male to female D) 2:1 male to female