The open ocean is a/an ________ environment.
A. oligotrophic
B. neotrophic
C. phylotrophic
D. eutrophic
Answer: A
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Upon treatment with heat or chemicals, bacteria will
A. all die immediately. B. die at a constant proportion. C. die at an exponential rate. D. die at a geometric rate.
The ________ exchange capacity is a basic measure of soil quality and increases with higher clay and organic matter content
Fill in the blank(s) with correct word
Suppose that the cells of seed plants, like the skin cells of humans, produce a pigment upon increased exposure to ultraviolet radiation. Rank the following cells, from greatest to least, in terms of the likelihood of producing this pigment
1. cells of sporangium 2. cells in the interior of a subterranean root 3. epidermal cells of sporophyte megaphylls 4. cells of a gametophyte A) 3, 4, 1, 2 B) 3, 4, 2, 1 C) 3, 1, 4, 2 D) 3, 2, 1, 4
What does the p-value represent in a t-test?
A. The probability that the samples have different means. B. The probability that, given the populations have equal means, the differences between sample means were due to chance. C. The percent chance that we can accept the null hypothesis. D. The probability that the alternative hypothesis is correct