reproductive cells like eggs and sperm
 
        
             
        
        
        
Answer: 
1.Carbon dioxide is converted to sugar used for food. - 1. Location- A
2.Carbon trapped in fossil fuels is converted to carbon dioxide. - 2. Location- C
3.Organic carbon is converted to fossil fuels. -3. Location- E
4.Carbon dioxide is converted to carbonates.- 4. Location- D  
5.Sugar is broken down and converted to carbon dioxide.  - 5. Location- F
Explanation
1. Carbon dioxide is converted to sugar used for food: The carbon dioxide is converted into sugars by the process of photosynthesis, which occurs in the green plants. Plants trap carbon dioxide and sunlight from the atmosphere, to synthesize their food. 
2. Carbon trapped in fossil fuels is converted to carbon dioxide: The fossil fuel produced deep inside the earth, acquired by the factory. From the factory the carbon dioxide liberated to the atmosphere.
3. Organic carbon is converted to fossil fuels: The organic carbon obtained after the degradation of organic matter is responsible for the synthesis of fossil fuels. 
4. Carbon dioxide is converted to carbonates: The carbon dioxide from the atmosphere gets dissolved with water of the water body and termed as carbonic water.
5.Sugar is broken down and converted to carbon dioxide: The glucose or sugar as a source of food in plants gets broken down into carbon dioxide and water by the process of respiration. 
 
        
             
        
        
        
Answer:
B
Explanation:
The plains have large rivers flowing through them. Every living creature or plant that grows requires water, so the answer is B. 
Fertilizers are needed by very large farms. It is what makes it possible to grow enough grain to have excesses to sell.
Pesticides are also needed. Insects abound in many sparsely  populated areas.
Renewable resources are used, but it is not the answer.
 
        
             
        
        
        
Answer: Diffusion
Explanation:
Diffusion is the process or a spontaneous movement of particles from an area of higher concentration to an area of lower concentration.
Examples are;
1. perfume
2. A drop of ink in a cup of water.
From these two examples when it is dropped, especially ink, it diffused inside the entire space of the cup and fill all the space by penetrating the entire molecule of the water available.