Uracil......... Is the answer i could find.
:3
Answer:
Each year, earthworms move deep into soil during fall and winter and return toward spring and summer. The likely stimulis for this behavioral response are relative humidity & temperature. Since the nematode breathes via the skin, the mucus coating may become dry & the organism would die if exposed to extreme cold & dryness.
Explanation:
Some of those lysosomes contain secretions that will help the immune cells destroy foreign pathogens.
Hope that helped you.
Fire is not a living thing, and abiotic factors are the factors in an ecosystem that are non-living. So, fire is an abiotic factor in an ecosystem, though its not mentioned alot.