Answer:
The lens
It helps to focus on objects and light
C. The process by which green plants and some other organisms use sunlight to synthesis food from carbon dioxide and water.
Plastics clearly constitute an important component of the range of materials used in modern society. Almost all aspects of daily life involve plastics or rubber in some form or the other. ... Owing to their light weight, plastics reduce transportation costs and, therefore, atmospheric carbon dioxide emissions./Plastic is durable and provides protection from contaminants and the elements.
"the process of hypothesis and testing through which scientific inquiry occurs"