Which of the following determines the carrying capacity of a particular population by an ecosystem?
1. keystone species
2. pioneer species
3. limiting factors
4. renewable resources.

Limiting factors determine the carrying capacity Hope this helps :)

The limiting factors determines the carrying capacity of a particular population by an ecosystem. The limiting factors are environmental influences that constrain the productivity of organisms, population or communities and thereby prevent them from achieving their full biological potential. 

A.prophage
a pieces if virus dna that becomes part of a