After caroline scrapes her knee, the cells that surround the wound begin to to replace the lost cells.

There has stem cells around the knees.

Explanation:

After Caroline scraps her knee, the stem cells around the wound begin to rapidly grow to replace the lost cells.

The chemical messenger which is produced by macrophages, will help in rebuilding the cells and repair the wound.

there's the proffessional site that will you.

because photosynthesis could not occur (apex)