Bulid and repair tissues, Make enzymes and hormones, and Help prevent infection. Hope this helps!
D. 99% of all living things that have ever existed are now extinct
Hydrogen would be the answer to this.
A. is your correct answer
The answer is a trowel.
-Evidence—
•-A trowel is a small hand tool used for digging, applying, smoothing, or moving small amounts of viscous or particulate material. Common varieties include the masonry trowel, garden trowel, and float trowel.