<span>Every living organism begins life as a single cell. Unicellular organisms may stay as one cell but they grow too. Multicellular organisms add more and more cells to form more tissues and organs as they grow. </span>
        
             
        
        
        
Answer:
The tropical rainforest is a hot moist biome where it rains every day year month etc, There is only a small amount of sunlight and rainfall that these plants receive. They usually adapt to their home environments! :) 
Explanation:
 
        
             
        
        
        
Heating of the Earth due to the Sun's rays causes convection currents of air upwards. The warm air moves upwards, while cool air from nearby regions fills in the lower areas. 
<span>Heating of the Earth can cause warm water currents that flow from hot areas like near the equator and tropical areas, while cold water currents flow from the arctic and antarctic regions and the temperate regions. </span>
        
             
        
        
        
It would be convection because it isnt having any physical collision which rules out conduction and it is going through mid air which rules out evaporation and radiation