Aaverage sneeze travels at about 100 miles an hour. rebecca designs an experiment to increase the speed of sneezes. she subjects four participants to different stimulants: pepper, bright light, pollen, and fizzy soda. while the participant sneezes rebecca measures how fast air traveled through the nasal passage. what is the control in rebecca’s experiment? a) the four participants b) the different stimulants c) the speed of a typical sneeze d) the speed of the induced sneezes

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h, o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Albinism is an inherited genetic disorder. explain what it is meant by inherited genetic disorder