⚠️please help ASAP, this is a one of the last questions for a very important test I’m taking and I would like to make sure my answer is correct
In reference to the Phylum
Echinodermata, what is a water
vascular system?
A. a network of water filled canals that help with
locomotion and gas exchange
B. the body plan that allows water to pass through to filter
feed
C. a thick layer on the outside of the organism that
protects it from dehydrating in the salt water
Answers: 1
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Biology, 22.06.2019 03:30
Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?
Answers: 2
Biology, 22.06.2019 14:00
Why are current extinctions of concern to enviromentalists?
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⚠️please help ASAP, this is a one of the last questions for a very important test I’m taking and I w...
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