Answer:
Deliver water, nutrients, amino acids, etc to the rest of the plant, and afir machanical supoort
It would cause Rain. But a cold front. Fronts are always in relation to moving cold air A cold front is the advancing edge of a cold air mass and a warm front is the retreating edge of a cold mass. If the cold air mass is displacing the warm air front then the cold air is advancing.
..........Proteins..........
The tropical rain-forest. It has much diversity and many different species. I believe there are 15 million types of animals and plants just alone in tropical rain forests.