Which best describes how blood pressure is measured and why it is important?
a)blood pressure measures pressure on the arteries and can be an indicator of an unhealthy cardiovascular system.
b)blood pressure measures pressure on the veins and can be an indicator of an unhealthy urinary system.
c)blood pressure measures pressure on the capillaries and can be an indicator of an unhealthy nervous system.
d)blood pressure measures pressure on the heart and can be an indicator of an unhealthy endocrine system.

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