Which statement best describes the development of our understanding of dna and inherited traits?

a. scientists working in the 17th century discovered it.

b. many scientists develop it over many decades.

c. frederick griffith figures it all out in 1928.

d. one scientist working alone discovered it over a few years.

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

This is a type pf behavior that animals are born with and them to survive

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels