D.8 should be the correct answer
Answer: Biotic factors
Explanation: An
ecosystem can be described simply as the collection of all living and non-living components in a particular area. The living components of the environment are known as biotic factors. Biotic factors include plants, animals, and micro-organisms. The non-living components of the environment are known as abiotic factors. Abiotic factors include things such as rocks,water,soil,light,rocks etc...
The nerve system communicates with basically all the systems in your body to help them function, and so does the cardiovascular system. Without these two systems, your body will not have the capacity to live.
A . They Have The Same Amount Of Generic Material And Are Identical .