Soil, rocks, minerals and sands are all abiotic factors that you might find in a desert.
The correct answer is (b.) an increase in the width of the stem. The increase in the width of the stem could be referred to as the secondary growth of the stem. Whereas the primary growth is the upward growth of the plant.
Answer:
2 KClO³ ------ 2KCl + 3O2
Active transport driven directly or indirectly by metabolic energy
