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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<span>According to research by John Gottman and Robert Levenson, contempt which involves looking down on another person, is particularly likely to undermine relationships.
</span><span>Being emotionally dismissive or critical, or becoming defensive are negative interactions in conflicts.</span>
Answer:
I try to acclaim the good behavior more often than I punish the inappropriate behavior. I try to acclaim the good behavior more often than I punish theinappropriatebehavior. Admonish bad behavior, and praise good behavior. They respond best to praise for good behavior.
Answer:

Explanation:
Data provided in the question
The ratios are
Second graders to the fourth grader is 
First graders to the second grader is 
Third graders to the fourth grader is 
Now if we multiplying these above three ratios but the last ratio should be reverse
So, it would be
= 
= 
Hence, the ratio of first graders to the third graders is 
Havasu falls and seba oasis. Hope this helps