Answer:
When plates rub together & they begin in the fault lines which cracks and starts an earthquake.
Explanation:
Danish scientist Hans Christian Gram devised a method to differentiate two types of bacteria based on the structural differences in their cell walls. In his test, bacteria that retain the crystal violet dye do so because of a thick layer of peptidoglycan and are called Gram-positive bacteria. In contrast, Gram-negative bacteria do not retain the violet dye and are colored red or pink. Compared with Gram-positive bacteria, Gram-negative bacteria are more resistant against antibodies because of their impenetrable cell wall. These bacteria have a wide variety of applications ranging from medical treatment to industrial use and Swiss cheese production.
The ozone layer helps prevent harmful UV rays from entering the atmosphere.
Answer:
Explanation:
Basic building blocks of all living things
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