The answer is C since heterotroph means they don't have a way of making food
Sample Response:
Bacteria are helpful because they produce oxygen, which our bodies need to breathe, and they help us to digest the food we eat. Bacteria are also helpful because they are used in medicine to help us overcome disease. Bacteria are harmful because they can cause tooth decay and illnesses that can be either common or quite serious.
This is a sample response, so it's 100% correct. Peace!
The lungs are lined with epithelial cells:)
I believe that the answer to this question is, that laws can be made to prevent certain things/ amounts of things to be used up.
