What is a job of the skeletal system?
a) protect organs
b) exchange oxygen...
Biology, 07.11.2019 18:31 DondreeColeman
What is a job of the skeletal system?
a) protect organs
b) exchange oxygen and carbon dioxide
c) remove waste
d) deliver nutrients to the body
Answers: 2
Biology, 22.06.2019 03:30
Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?
Answers: 2
Biology, 22.06.2019 09:10
Refer to this portion of a dichotomous key for fish identification to answer the question. 1. (a) has a single dorsal fin ® 5 (b) has a double dorsal fin ® 2 2. (a) one fin is spiny, the other is smooth ® 3 (b) one fin is not spiny or smooth ® 4 5. (a) has small fin on back near tail ® 6 (b) has no fin on back near tail ® 7 6. (a) has barbs near the mouth ® catfish (b) does not have barbs near the mouth ® 10 7. (a) tail is asymmetrical ® 8 (b) tail is symmetrical ® 9 10. (a) scales are small ® trout (b) scales are large ® whitefish what is the next step to complete to identify a fish that has a single dorsal fin, no fin on the back near the tail, and no barbs near the mouth? step 2 step 5 step 7 step 10
Answers: 2
Biology, 22.06.2019 17:00
Interferons play a vital role in the immune system why are interferons so important?
Answers: 1
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