Which best explains the circulation system within mammals?
a. mammals use a closed, single-lo...
Biology, 16.09.2019 08:30 nickname0097
Which best explains the circulation system within mammals?
a. mammals use a closed, single-loop circulatory system aided by a three-chambered heart.
b. mammals use a closed, single-loop circulatory system aided by a four-chambered heart.
c. mammals use a closed, double-loop circulatory system aided by a four-chambered heart.
d. mammals use an open, double-loop circulatory system aided by a four-chambered heart.
Answers: 2
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Which way do the nitrogenous bases in dna pair up? a. a and g; t and c b. a and c; t and g c. a and t; g and c d. a and a; t and t; g and g; c and c
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Biology, 22.06.2019 17:00
Your sense of touch depends upon: a. direct contact b. heat chemical c. reactions d. pain
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