If a stream has an average depth of 3 meters, an average width of 4 meters, and an average stream velocity of 0.24 m/s, what is the discharge rate or streamflow (Q)?
A) 0.187 m3/s
B) 3 m3/s
C) 12 m3/s
D) 48 m3/s
B
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What soil composition would be best for availability of nutrients, water, and root development?
A) equal amounts of sand, clay, and humus B) higher proportion of humus, lower amounts of clay and sand C) higher proportion of clay, lower amounts of humus and sand D) higher proportion of sand, lower amount of humus and clay
The skin is an example of which part of the immune system?
a. adaptive b. innate c. cell-mediated d. humoral
Suppose that you have a population of guinea pigs in
which two-thirds of the alleles for coat color specify black, and one-third specify white. According to the Hardy-Weinberg rule, what will be the ratio of these alleles in the gene pool in future generations, provided all the guinea pigs reproduce? a. 1:1 b. 2:1 c. 3:1 d. 6:1 e. 7:1
During phase I clinical trials, a new drug is tested ________
A) on thousands of human volunteers B) on a few hundred human volunteers C) in an animal model D) on fewer than 100 human volunteers