The individualistic view of communities proposed by ____ is supported by data showing that species compositions
change gradually across environmental gradients.
a. Clements
b. Gleason
c. Darwin
d. Whitaker
e. Connell
ANSWER: b
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Nearly all animals rely on three main molecules as sources of energy and building blocks for growth and development. They are:
A. carbohydrates, proteins, and amino acids. B. nucleic acids, carbohydrates, and lipids. C. proteins, fats, and carbohydrates. D. carbohydrates, amino acids, and lipids. E. sugars, proteins, and fats.
The structure labeled "B" is the
a. right ventricle. b. right atrium. c. left atrium. d. left ventricle. e. superior vena cava
On average, about ________% of the energy in one trophic level is transferred to the next
Fill in the blank(s) with correct word
The sex of the fruit fly Drosophila melangaster is determined as follows: XX chromosomes give a female and XY give a male. The gene for bar eyes is recessive and located on the X chromosome. If you had a normal-eyed female and did not know whether she was homozygous or heterozygous, you could determine her genotype by mating her with
A. any kind of male. B. normal-eyed males only. C. bar-eyed males only. D. homozygous, bar-eyed males only.