A or D... depending on which country you are talking about and if it is a developed or developing country...
the effects of overcrowding will definitely be negative...
sorry not much help!
        
             
        
        
        
Answer:
B. Carbon dioxide 
Explanation:
First of all, let’s write out the photosynthesis equation to identify the products and reactants. 
6CO2 + 6H2O + energy —> C6H12O6 + 6H2O 
In a chemical equation with the arrow pointing right, the reactants are on the left and the products on the right. 
In photosynthesis, the reactants, carbon dioxide, water, and energy, react to form the products of glucose (sugar) and oxygen. 
Now, let’s look at the answer choices. We can automatically eliminate choices A (oxygen) and D (sugar) because they are products. 
We are left with B (carbon dioxide) and C (water). Water isn’t really considered a major contributor to climate change. Carbon dioxide is a greenhouse gas that traps heat in the atmosphere, causing climate change. 
Therefore, the best answer choice is B. Carbon dioxide 
 
        
             
        
        
        
El teme son up poco differente porque hay differentes lados
        
             
        
        
        
A characteristic classified as a special impact
        
             
        
        
        
Answer: Unlike the one way flow of energy, matter is recycled within and between ecosystems.
Explanation: