I believe the answer you are looking for has to do with cells, they are the basic building block of life and are the smallest life that can support itself.
Answer:
mutualism
Explanation:
It's a symbiotic relationship beneficial to both symbionts.
in this case E. Coli helps with the absorption of Vitamin K and other important vitamins for the human body in the colon. While, Human (host) provides shelter for it
Answer:
meteorite striking the dinosaures
Answer:
This is the rock cycle I believe hope this helps
Answer:
The Active transport along cytoskeletal filaments.
Explanation:
Cytoskeletal filaments incorporate microfilament, microtubules and intermediate filament which take into consideration faster transport than diffusion as they support cell division and the basis of movement. The active transport also maintain the right concentrations of molecules and ions within living cells.