Why are there not large, visible colonies of bacteria like those in the petri dish on the things we use every day? (please don't write anything randomly or else I will report your account for nonsense)

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

4. if a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. water will move out of the cell, causing it to shrivel. b. water will move in and out of the cell at the same rate. c. water will move out of the cell, causing it to swell. d. water will move into the cell, causing it to swell.

Agene editing technology called crispr-cas9 uses cellular machinery to change the cell's genetic material. how might this technology be useful in treating diseases like cancer?