A ) if it s dna G with C and A with T so if it s C 32 G its 32 you have only 100% so it should be 100-32-32 =36 A=T so 36=A+T 64=2T T =18
The food sources available for a particular species in an ecosystem. Also space where they can live and reproduce, but food is the main factor.
Photosynthesis and chemosynthesis Let me know if you want me to explain more in depth.