B ecosystem because it affect a lot of thing ,especially you phenotype
Answer:
C. a phosphate group, a sugar (deoxyribose), and a nitrogen base
Answer:
The cells that make up the xylem are adapted to their function: They lose their end walls so the xylem forms a continuous, hollow tube. They become strengthened by a substance called lignin . Lignin gives strength and support to the plant.
<h2>Hope it helps you.</h2>
Answer:
Gà có trước vì trong trứng có protein đặc biệt chỉ gà mới đẻ được. Gà thì đột biến mà thành