Answer:
Oxygen
Explanation:
The formula for cellular respiration is oxygen + glucose -> water, carbon dioxide, energy. You can already cross out A and D because they aren't in the formula, so you have two left, water and oxygen. The reason why it is oxygen and not water is because without oxygen you can't even have water. also, I just got this right on my test :-)
 
        
             
        
        
        
Answer:
Explanation:
Coniferous means 'cone bearing,' meaning these trees don't lose their leaves every year. Deciduous means 'falling off' so those trees lose their leaves every year. I would assume the difference is that coniferous forests don't lose their leaves every year while deciduous forests do.
 
        
             
        
        
        
1. CAUG 2. UUAGGC 3. ACAUCG 4. CGAACAU
        
             
        
        
        
Answer: 2. Precipitation
Explanation:
Aerobic cellular respiration requores oxygen. Photosynthesis does, as well.