Answer: greenhouse gases
Explanation:they get trapped at the troposphere but also travel to the stratosphere due to change in air pressure with height.
Answer:
Periosteum.
Explanation:
Periosteum is an extremely thin region of non-calcified tissue on the exterior of bones. It covers the entire surface of every bone in the body, with the exception of the joint-forming ends of bones where cartilage forms the bone’s outer layer.
Explanation:
Metabolism in eukaryotic cells depends on the endoplasmic reticulum because it transports materials between membrane-bounded organelles within the cell.
Im so confused i would help you i just need a better understanding.<span />
