The respiratory advantage provided by a four-chambered heart over a three-chambered heart in vertebrates is
What will be an ideal response?
separation of oxygen-rich blood and oxygen-poor blood.
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Artemia and Fast Plant™ bioassays can be used to identify
(a) cytotoxins. (b) herbicides. (c) plant growth stimulators. (d) all of the above.
Determining the best-fit line for a data set by utilizing the least-squares linear regression, the slope of the resulting line represents a useful estimate known as the ________, [two words] for which we use the symbol h2
Fill in the blank(s) with correct word
Plants can most readily utilize the ________ form of nitrogen
A) nitrous oxide B) N2 C) amino D) nitrate
Dehydration in animals __________.
a. is always lethal b. that are exceptionally small, such as the tardigrade, is not usually fatal because of their large surface area-to-volume ratio c. is, on a cellular level, the opposite of freezing d. is a problem because fluid-mosaic cell membranes fall apart when deprived of water e. may be less damaging in the presence of sugar