Krusty krabs breath mints
mr. krabs created a secret ingredient for a breath mint that he thinks will "cure" the bad breath people
get from eating crabby patties at the krusty krab. he asked 100 customers with a history of bad breath
to try his new breath mint. he had fifty customers (group a) eat a breath mint after they finished
eating a crabby patty. the other fifty (group b) also received a breath mint after they finished the
sandwich, however, it was just a regular breath mint and did not have the secret ingredient. both
groups were told that they were getting the breath mint that would cure their bad breath. two hours
after eating the crabby patties, thirty customers in group a and ten customers in group b reported
having better breath than they normally had after eating crabby patties.
questions
1. which people are in the control group?
2. what is the independent variable?
3. what is the dependent variable?
4. what should mr. krabs' conclusion be?
5. why do you think 10 people in group b reported fresher breath?

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.