if the sums of the first 8 and 19 terms of an ap are 64 and 361 respectively, find the commom differences and the sum of n terms of the series

Whats the difference between epinephrine and norepinephrine?

Which action is the cerebrum responsible for? a. breathing b. coordination c. problem solving d. balance and one more question which characteristic true of both boys and girls during puberty? a. a curvier shape b. a deeper voice c. weight loss d. body hair

What is the main difference between trace elements and the main elements that make up the body? 1) main elements consist of heavier atoms. 2) trace elements are only needed in small amounts. 3) trace elements consist of heavier atoms. 4) main elements are only needed in small amounts.