__________ are aquatic heterotrophs and autotrophs
with a cellulose covering. Fill in the blank(s) with the appropriate word(s).
Answer: Dinoflagellates
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Blood in arteries
1.always travels away from the heart. 2.travels away from the heart only if it is oxygen-rich. 3.always travels toward the heart. 4.travels from the lungs. 5.is always oxygen-rich.
The second cervical vertebrae, that allows for rotational movement, is called the ___________
Fill in the blank(s) with the appropriate word(s)
In the United States, acid rain is most prevalent in the
a) northeast b) southeast c) southwest d) northwest e) northeast and the southwest
The standard or housekeeping sigma factor used most often by E. coli RNA polymerase under normal growth conditions is called sigma ________.
A. 32 B. E C. 70 D. S