Answer:
The producers play main role in the food chain and food web as well. These organism make food by the help of the process known as photosynthesis.
Only producers have the ability to make food by trapping sunlight. All the living source needs energy to survive.
The source of food is producers so living things cannot survive without food. So there producers are considered as the main component of food chains and food web.
hence, they play a very vital role in the environment.
Some blood cells responsible for the transportation of oxygen and other are there for rebuilding of tissues. Fights things the body doesn't recognize
15)C
16)D because the function of mitochondria is providing energy
17)B cell wall
18)C cell membrane
19)C plantae
20)B cytoplasm
<span>They were produced by recombinant DNA technology. </span>
