The simplest animals with a closed circulatory system are
A. mollusks.
B. amphibians.
C. annelids.
D. fish.
E. reptiles.
C. annelids.
Biology & Microbiology
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List four uses for conifers.
What will be an ideal response?
Biology & Microbiology
After leaving our left ventricle, blood next passes through the
A. vena cava. B. aorta. C. semilunar valve. D. atrioventricular valve. E. left atrium.
Biology & Microbiology
The nucleoside triphosphate molecules in DNA are linked together in the 5'?3' by a(n) ________ bridge
A) phosphate B) covalent C) phosphodiester D) peptide E) phosphatidyl
Biology & Microbiology
Springwood has narrower conducting cells and many fibers. Indicate whether the statement is true or false
Biology & Microbiology