Anew and effective antibiotic becomes widely used for a particular species of bacteria. after some time, an antibiotic-resistant strain of the bacteria becomes prevalent. which mechanism explains this phenomenon?
the bacteria undergoes genetic drift, leading to formation of a new gene pool and thus evolving a new characteristic.
although less common previously, the resistant strain becomes more prevalent due to natural selection.
the bacteria undergoes genetic flow, thus creating a new gene pool and evolving into a new species.

Some infants in poorer households are not fed this important food for all babies. what is it? a. baby food b. breast milk or infant formula c. water. d. all of the choices are correct

Which action encourages homophobia? tolerating others' opinions welcoming someone into a group respecting others' differences accepting inappropriate terminology

Its totally for health > : ) random questions- free points. 1. grab the book nearest to you, turn to page 18, and find line 4. 2. stretch your left arm out as far as you can, what can you touch? 3. before you started this survey, what were you doing? 4. what is the last thing you watched on tv? 5. without looking, guess what time it is 6. now look at the clock. what is the actual time? 7. with the exception of the computer, what can you hear? 8. when did you last step outside? what were you doing? 9. did you dream last night? 10. do you remember your dreams? 11. when did you last laugh? 12. do you remember why / at what? 13. what is on the walls of the room you are in? 14. seen anything weird lately? 15. what do you think of this quiz? 16. what is the last film you saw? 17. if you could live anywhere in the world, where would you live? 18. if you became a multi-millionaire overnight, what would you buy? 19. tell me something about you that most people don't know. 20. if you could change one thing about the world, regardless of guilt or politics, what would you do?