which of the following correctly compares the changes that take place in an ecosystem during primary succession and secondary succession?

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

Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.

When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements? a. carbon remains carbon b. nitrogen c. oxygen d. hydrogen