10. Which protects plant and animal cells from outside agents? O cell membrane O cytoplasm
O vacuole
O nucleus

it would be the percentage of food eaten by the flock

i remember doing this lab

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

hope this any more questions i am here plz mark brainliest

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%