What structures act as filters to trap pathogens and damaged cells as lymph flows through them?

Spleen

Explanation:

The is because the spleen is an organ found in upper section of the abdomen spleen acts as a filterand it help to remove old and damaged cells . It also play a major role in controlling the amount of blood and blood cells that move round the body. The spleen also helps remove pathogens. It contains white blood cells called lymphocytes and macrophages.

a. the production of carbon dioxide through the process of photosynthesis