What is the main water source for land plants?
rain
soil
biomolecules
essential nutrients

The correct answer is B. Soil

Explanation:

Plants are usually multicellular organism that depends on photosynthesis process to get energy. In terms of nutrients, most plants need from different minerals, water, carbon dioxide, and sunlight not only for creating food (photosynthesis) but for many other basic functions. In the case of water, plants mainly obtain water from the soil as they have specialized structures that include roots and root hair cells that absorb the water from the ground and then takes this water to the other parts of the plant. Therefore, the main water source of land plants is the soil.

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

1. a tropical dry forest carries out more rapid nutrient cycling