What is the identity of planet A?
What is the identity of planet B?

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

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.

What percentage of light hits earth's surface directly?