Hey there!
Here is a simple food chain:
Grass >>> Grasshopper >>> Mouse >>> Owl
Hope this helps!
~Autumly
A I think sorry if it’s wrong
Gram-positive and Gram-negative are different in their resistance to antibiotics. It is because of their different structure of cell wall. Gram-positive bacteria have a thick peptidoglycan cell wall and dyes purple in the Gram test (for categorization of bacteria). Gram-negative bacteria have thin peptidoglycan layer and do not turn purple. Gram-positive bacteria are easier to kill because their thick peptidoglycan layer absorbs antibiotics.