<span>During photosynthesis, plants use carbon dioxide and produce oxygen. During metabolism oxygen is used and carbon dioxide is a product. Humans impact the carbon cycle during the combustion of any type of fossil fuel, which may include oil, coal, or natural gas.</span>
It has to be confirmed through scientific tests in a lab.
Answer:
Smooth Muscle
Explanation:
In the digestive tract it's called the muscularis mucosa.
Endocytosis carry substances into the cells, and exocytosis is what the cell rejects.