Answer:
lignified vascular tissue
Explanation:
Stems of Vascular plants are made of vascular tissues and lignin which gives it is characteristics stiffness and the ability to grow tall to access more light and air.
I think the answer is glucose converted to ATP..
<span>c. regular exercise has little impact on maintaining peak performance after age 30</span>
Explanation:
The cell nucleus is a membrane-bound structure that contains a cell's hereditary information and controls its growth and reproduction. The main function of the cell nucleus is to control gene expression and mnedite the replication of DNA during the cell cycle.
Answer:
b many ogansisms have become exinct
Explanation: