The answer is plants. Plants are at the start of the food chain :)
Answer:
to write a table of contents you will need to list your chapters from first to last.
Explanation:
if you have a table of contents you need to write, you can list your chapters and the page numbers in the comments and I can type it up for you.
Answer:
Lungs.
Explanation:
Lungs are the organs that are responsible for gaseous exchange in humans. The lungs absorb oxygen from the air that is required for the process of respiration while on the other hand, carbon dioxide is transferred from the cells to the lungs through blood because carbondioxide gas is a waste material that is produced during respiration so it can be removed from the body with the help of lungs..