Early Romans discovered that objects could be magnified through the construction and shaping of glass. For the past thousand years, this discovery has led to the construction and design of modern day microscopes. The development of the microscope was used in the 17th and 18th centuries to observe cells and eventually develop “cell theory”. Which of the following is the most basic explanation of “cell theory”? Every object in the universe is made of cells.
Cells are made from atoms during chemical reactions.

All cells are identical.
All living things are made of cells.

the answer to your question is b

answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

explanation:

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.