Yes there are differences
Answer: coal burning factories and increased automobile usage has caused air pollution
Explanation:
Answer:
practice effects
Explanation:
Based on the information provided within the question with regards to Leigh's experiment it can be said that her biggest concern should be practice effects. This term refers to the effects or changes that can occur when repeating the same experiment various times with the same participants. Which is what Leigh is doing, as she is only changing one variable but repeating the same experiment.
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Answer: Hey I have no clue but be shore you are putting the question together.
Explanation:
Answer - Glover Cleveland
