Use the following to answer questions :
Refer to the figure below. 
-Under which conditions can both the rice weevil and the lesser grain borer persist indefinitely?
Definitions:
Positive Correlation Condition
A condition where two variables increase or decrease in parallel, indicating a direct relationship between them.
Placebo Effect
A psychological phenomenon where patients experience real improvements in their condition after receiving a treatment with no therapeutic value, simply because they believe it is effective.
Participants' Expectations
Refers to the beliefs or assumptions held by individuals participating in a study about what will happen to them or what they are supposed to do, which can influence the outcomes of research.
Single-blind Study
A research experimental design in which the participants do not know which group (experimental or control) they are in, to prevent bias, while the researchers do.
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