Mr. James, the owner of Squeaky Clean Floor Company, invented a solution that he claims is better than the other top three selling floor cleaners. To prove his claim, Mr. James performed several experiments. His results appear below. Brand of Floor Cleaner Type of Floor Type of Debris
Spread on Floor # of Trials Cleaned Floor?
Squeaky Clean Brand Vinyl Dust 5 yes
Leading Brand 1 Vinyl Grease 5 no
Leading Brand 2 Vinyl Paint 5 no
Leading Brand 3 Vinyl Mud 5 no
Which of the following is true of Mr. James' experimental procedures and results?

the answer is b

Explanation:

it was b on my test let me know if I am wrong.

Mr. James' results are biased. He selected different types of debris to make it easier for his floor cleaner to be effective.

Explanation:

study island

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.