The answer would be A. The DNA is the molecule that has the instructions needed for an organism to develop.
Hope this helps!! (:
Answer:
A biotic factor is a living organism that shapes its environment. In a freshwater ecosystem, examples might include aquatic plants, fish, amphibians, and algae. Biotic and abiotic factors work together to create a unique ecosystem.
Desert because they are always dry, but in the colder months they can get cold
There would be an over abundance of organic waste.
