a. phosphate group, sugar, nitrogen base.
b. if it is DNA- deoxyribose sugar and if it is RNA- ribose sugar
c.Nitrogen base
d. Adenine, Gaunine, cytosine, Thymine.
Answer:
You can help protect and restore the temperate forest by purchasing paper and wood products that are FSC certified for your home and business. These are products that have come from sustainably managed forests, where trees are replanted and not clear cut.
Explanation:
The cell theory consists of:
1. all living organisms are made up of cells
2. cells are the basic structural/organizational unit of all organisms
3. all cells come from pre-existing cells
The answer is D its tightly packed cells allow for proctection against harmful substances.
