The beach flea Talitrus is a member of the order:
a. Stomatopoda.
b. Decapoda.
c. Euphausiacea.
d. Amphipoda.
e. Isopoda.
D
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Given that humans shifted from hunter-gathers to an agriculturally based society within the last 10,000 years does NOT mean that ________
A) we cannot expect evolution by natural selection in human populations to have kept pace with our changing way of life B) humans still retain many, if not most, of the features that made us well adapted to living in the hunter-gatherer societies of the stone age C) we can use knowledge of the differences between our current lifestyle and the lifestyle of our pre-agricultural lifestyle to better understand both the peculiarities of humans and risks associated with our modern lifestyle D) humans are unique in that we have the capacity evolve by natural selection much more rapidly in response to changes in our environment than other organisms do
A measure of diversity between sites is called
A) alpha diversity. B) beta diversity. C) gamma diversity. D) zeta diversity.
Surfactants is one of the later components made in the fetus (prior to birth).
a. true b. false
Indicate which of the following statements are true regarding the DNA structure. (Select all that apply)
a. The nitrogenous bases face the inside and hold the two backbones together with hydrogen bonds. b. Across from the purine on one side, there is another purine on the other. c. Each sidepiece is a sugar-phosphate backbone composed of phosphate groups alternating with the sugar deoxyribose.