Answer:
The correct answer is - B.directional selection.
Explanation:
When a bacterial colony is exposed to an antibiotic the maximum number of the bacteria dies due to noo resistane and some of survive even with no or very less resistance to the antibiotic and reproduce.
Over many generations the survived and continuosuly divivng resitant bacteria become more and more with higher frequency and ultimately evolved to a resistance strain of the bacteria for the antibiotic. Such mutation is directional selection as the frequency of the resistance bacteria going from no resistance to a high amount of resistance is unidirectional and progresive.
Answer: Flooding
Explanation:
With the current climate change our polar ice caps are melting, therefore increasing sea levels and flooding.
The part of the microscope that adjusts the intensity of light is the "adjustable diaphragm", which is located under the stage or the observing area. Hope it helped!
Answer:
Two kidneys
Two ureters
Bladder
Sphincter
Urethra, in adult females, is shorter than the adult males and is about 1.5 inches long
Brainliest?
Explanation:
The animals evolved from the habitat they live in . Because the air around them always changes.