WILL MARK BRAINLIEST PLEASE HELP MEEE Refer to page 243 Figure 18.

a. What happened to the bacteria’s penicillin resistance from 1987 to 1990?

b. Explain how observing an increase in antibiotic-resistant bacteria after the use of antibiotics provides evidence for Darwin’s theory of evolution by natural selection.

c. Why do scientists need to continually develop new antibiotics to treat bacterial diseases such as gonorrhea?

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

hi~~

i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.