Gary has $30 dollars. After buying 7 sea shells, he only had 9 dollars left. How much did each sea shell cost.
Each sea shell costed 3 dollars. By working backwards, you subtract 9 from 30 to get 21 then divide that by 7 to get 3.
The movement of particles against the concentration gradient is called?
Active transportation. The movement is from high to low concentration.
Which of the following is real, rational, and and an integer? 5/8, 3.14159, 8?
8 is real, rational, and an integer. 5/8 is not an integer, but it is still real and rational. 3.14159 is not an integer or rational, but it is still real.