All cells have a cell membrane. its basically what protects the cells from getting toxins that are sometimes entering your body. without a membrane on all cells, you would get sick a lot!!
        
             
        
        
        
Here's the balanced chemical equation for the given Reaction,
- 2 HCl + 2 Na =》2 NaCl + H2
i hope it helped you...... 
 
        
             
        
        
        
Answer:
Autotrophs
Explanation:
Food chain is a step by step feeding process in an ecosystem where an organism producer is been feed on by another organism that depends on it 
called consumer and it is also feed on by predator. Producer usually produce their food its includes plants, Algae, phytoplankton.
The energy level moved from the producer to the last organism on the chain. 
Autotrophs are the same as producer and an Algae food chain is an example of aquatic food chain where algae serves as primary source of energy(Producer) and its been feed upon by mosquito larvea and larvea by frogs and frogs are eaten by racoon. 
 
        
             
        
        
        
Answer:
In my opinion, it would be A, B, D, and G. Latitude because of the location of where you are, elevation to determine how cold it is. Air currents so you know if its windy or not. Lastly, proximity to water, due to the fact that you can get rain because you're closed to the water.
Explanation: