Which type of muscle tissue has the ability to self-stimulate, meaning it requires no nerve stimulus for contraction?
(a) cardiac
(b) skeletal
(c) smooth
(d) cramp

Suppose you are estimating the size of a blue crab population. what is the population size if the number marked in the first catch is 40, the total number in the second catch is 200, and the number marked in the second catch is 50?

Which of the following represents a negatively charged ion? of t 7

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?