How do I use random assignment for observational study design to test what makes a banana ripen quicker using a banana that's wrapped in plastic and one that's not wrapped in plastic?  what what is the response variable and what is the explanatory variable?

In their experiments with the flowers of Begonia involucrate, Agren and Schemske (1991) observed that there was a trade-off between what two characteristics? Size of flower and number of flowers on inflorescence Size of flower and pollination Annual versus perennial reproduction O Time and expense to grow the pollen tube versus cost of maintaining the flower on the tree

1) Design an experiment based on fruit ripening and ethylene: (1 or 2 sentences is fine) Hypothesis: Independent variable: Dependent variable: Control (describe at least 2): Describe the control group: Method: Create a graph/table of your expected results.  Label all axes and give the graph/table a name.

Please help with the following: Prior to approximately 12 KYA, humans were hunter-gatherers and relied on wild plants and animals for subsistence. This means that their conscious manipulation of the genomes and gene pools of other organisms was essentially non-existent. 12KYA signaled the beginning of plant and animal domestication efforts. A. Two true statements; one false statement B. Two false statements; one true statement C. All True statements D. All False statements E. None of the above