An equation or physical object that represents something that is too big, too small, too fast, or too slow to observe directly. Constant.
Answer:
The epidermis has tiny pores called stomata that control transpiration and gas exchange with the air. For photosynthesis, stomata must control the transpiration of water vapor and the exchange of carbon dioxide and oxygen.
Explanation:
1)Carbon is abundant and common
2)forms strong covalent bonds
3)has four valence electrons
4)variety of shapes
5)bonds with multiple elements.
The answer to the question is d. tissues
