Identify what is being asked in each item.? 1.this layer is made up of melted metals such as iron and nickel.
2.the layer of the erath that is divided in two layers.
3.it is the thickest layer of the earth.
4.this layer of the earth is composed mainly of solid iron and nickel.
6.it is the thinnest layer of the earth.

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.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Nucleic acid certain protein cell membranes certain carbohydrates