Answer:
Both organs exchange oxygen and carbon dioxide.
Explanation:
This is because the plant leaf exchange gases during photosynthesis where it uses carbondioxide and water in the presence of light energy and chlorophyll to produce carbohydrates and oxygen. Therefore oxygen is given out to the atmosphere and carbondioxide is taken in.
The lungs also is an organ of respiration, it is where exchange of gases take place where oxygen is taken in through breathing and carbondioxide is given out as by product.
Answer:
DNA or protein can be used as a ''molecular clock'' that tells how long it has been since two species have diverged from a common ancestor. The fossil record is usually derived from sedimentary rocks laid down millions of years ago.
Sedimentary rocks, I think
Darwin’s ideas operate on the basis that organisms must change to survive in their environment. One of the key aspects of these changes is that they help the organisms utilize resources as effectively as possible. If there were unlimited resources there would not be a need for change. Malthus’s studies in limited resources shows how human populations changed to best use the resources available.
