Anew antibiotic is introduced and is immediately effective in fighting infections caused by bacteria x. several years later, however, the antibiotic is no longer always effective against bacteria x. the best explanation is

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

Apair of fruit flies reproduces and has 1,000 offspring. all 1,000 of the offspring have the alleles gg. what is the most likely combination of alleles for each parent

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only