Biology, 22.06.2019 18:30 ryanbreland14
Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas
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Biology, 22.06.2019 07:30
The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body
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Biology, 23.06.2019 00:00
Which of the following is situated at the base of the lungs? a. diaphragm. b. larynx. c. bronchi. d. pharynx.
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Biology, 23.06.2019 00:30
What are the base pairing rules? how does this allow for dna replication
Answers: 1
Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are...
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