Ned is designing an experiment to test which hand sanitizer kills the most e. coli bacteria. in order for ned's results to be valid, what must he do? a. test each hand sanitizer on different days and at different times of the day b. test the first brand of hand sanitizer on e. coli bacteria, then test the second brand of hand sanitizer on a sterilized petri dish c. test the hand sanitizers first on e. coli bacteria and then on other bacterial species d. test the hand sanitizers on bacterial colonies that are kept in the exact same environmental conditions, such as temperature and light level
Answers: 1
Biology, 22.06.2019 09:00, magicpuppydance
Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs
Answers: 2
Biology, 22.06.2019 14:40, breniljakenotro
Both destructive and constructive, the natural event seen here, is important in destroying and creating landforms on earth. what is this event called? a) deposition b) flooding c) landslide d) sedimentation
Answers: 2
Biology, 22.06.2019 18:30, mdiaz487
Brian has a medical condition called cone dystrophy, which is a disorder of the cone cells in the eye. what symptoms would you expect brian to have? a. inability to see in the dark b. difficulty determining colors c. difficulty determining shapes and outlines d. inability to see in all light conditions
Answers: 2
Ned is designing an experiment to test which hand sanitizer kills the most e. coli bacteria. in orde...
English, 16.04.2021 18:00
Mathematics, 16.04.2021 18:00
Mathematics, 16.04.2021 18:00
Mathematics, 16.04.2021 18:00
Mathematics, 16.04.2021 18:00