Hydrangeas are flowers that have different colors depending on the pH of the soil in which they grow. Helen wants to change the color of her flowers. To do so, she must
increase the pH of her soil from 5.2 to 6,6. She has compost made from vegetable
and fruit peels, coffee grounds and tea bags. She also has a bag of lime. Which
should she use? Describe the type of reaction that will occur.

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

What are some characteristics of a free enterprise economy?

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.