25. Which of the following is not an example of biotechnology research?
a. medicine development
b. human health
c. vaccines
d. symbiosis

d. symbiosis

Explanation:

Biotechnology is a field of science in which we study about the beneficial microorganisms and use it for the production of industrial products. In biotechnology, scientists made medicine from microorganisms due to the insertion of specific gene in the bacteria. After sometime, bacteria accept that gene and started the production of that gene. This method is used for the production of insulin.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.