A host to feed off of, the right temperatures, basically the right living conditions for that type of bacteria. Most of the time it depends on the type of bacteria.
Overgrazing, overcropping, deforestation
A giant elliptical can contain 400 billion of stars
Sum of all angles in a quadrilateral is 360....so x=36
1st angle=4(36)=144
2nd angle=3(36)=108
3rd angle=2(36)=72
4th angle =36
An ecosystem has abiotic(no living things like water and wind) and also biotic(living things) while a community is biotic things
