The earth's crust and Human bodies are made of the same elements in similar amounts.
a. true
b. false
Answer: b. false
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DNA rearrangements in eukaryotes can
A) cause chromosome puffs. B) enhance production of the certain gene products. C) increase the diversity of possible gene products from a limited number of genes. D) allow for epigenetic regulation. E) enhance production of the certain gene products and increase the diversity of possible gene products from a limited number of genes.
If leaves were the only food in your diet, you would most likely have:a
more incisors than premolars and molars. b. fewer incisors than premolars and molars. c. an equal number of incisors, premolars, and molars. d. only premolars and molars. e. an incomplete digestive tract.
All of the following nucleotide bases are pyrimidines except
A. cytosine. B. cytosine and thymine. C. thymine. D. adenine. E. uracil.
What kind of interaction occurs when two cardinals (birds of the same species) are trying to build a nest in the same tree?
a. intraspecific competition b. mutualism c. fundamental competition d. interspecific competition