What is abiotic and biotic? and what effects biotic and abiotic

1)Biotic factors are the living components of an ecosystem. These include living animals, plants, and microscopic organisms like bacteria. 
Abiotic factors are the non-living components of an ecosystem. ... Biotic and abiotic factors both influence each other.
2)Both biotic and abiotic factors are related to each other in an ecosystem, and if one factor is changed or removed, it can affect the entire ecosystem. Abiotic factors are especially important because they directly affect how organisms survive.

True statement gravity force is more on bigger mass, less on smaller mass.all mass fall on planet with same acceleration and speeds