The answer is (b.) ecosystem. An ecosystem is all living organism in an area functioning together with nonliving factors of the environment. An Ecosystem is a community of the living organism that includes the producers, the consumers, and the decomposers.
DNA is an identifier, I'm not exactly sure how to answer this.
Polymers are made up of monomers.- that's the relation between them. For example, polysaccharides is the polymer of it's corresponding monosaccharide.
This is an example of...
C) genetic engineering
Clinical trial of dubious quality to test his hypothesis about vitamin C; a clinical trial that other researchers rated as defective. In his research, there was not even a randomization to take vitamin C or not, it was simply observed the three who were given the micronutrient, without having a subject who was not given to compare results.
