How does fluid in the blood become lymph? how is it returned to the blood? detailed

The fluids in the blood leak through the capillaries and into the surrounding tissue. Lymph fluid enters the lymph nodes, removing foreign bacterial bodies from the bloodstream.
After these substances have been filtered out, the lymph leaves the lymph nodes and returns to the veins, where it re-enters the bloodstream.

What’s the

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for