Alec saw footage of a landslide on the news. He saw rocks falling from the side of a mountain, with some of them smashing into each other and breaking apart. Select two of the processes Alec witnessed. A
cementing

B
compacting

C
erosion

D
sedimentation

E
weathering

F
deposition

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.

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.

Has magnification ability of hundreds of thousands of times