Number 3 and 4 are the correct answers hope this helped
Answer:
Cellulose is the main substance found in plant cell walls and helps the plant to remain stiff and strong
Explanation:
Walking does not contribute to global warming.
Large fragments of dust and debris clump together to form a planet
Answer: Cell A does more work than cell B.
Mitochondria is the energy producer organelle of the cell. It produces energy in the form of ATP molecules. It is a membrane bound organelle which is only present in eukaryotic cells not found in prokaryotic cells. Presence of more number of mitochondria in the cell indicates that the energy requirement of the cell is more. This energy is required for cellular metabolism. Therefore, cell with more mitochondria works more than the one with less mitochondria.
