Reynaldo is reviewing a study on the effectiveness of a new drug-free remedy for depression. in the study, a group of participants was given a natural supplement for a period of six weeks. they rated their mood both before and after treatment. two-thirds of the group reported a marked improvement after the trial. what change in this study would do the most to increase reynaldo's confidence that sound scientific practices were followed?

4the indian leaf butterfly has traits that allow it to resemble a leaf. the bright colors of the monarch butterfly indicate that the butterfly tastes bad and can be poisonous. how does the appearance of these butterflies them to survive? f the indian leaf butterfly is able to avoid predators while the monarch butterfly warns predators away. g. the indian leaf butterfly frightens predators away while the monarch butterfly poisons predators before they can eat it. h both butterflies rely on camouflage to avoid predation. j both butterflies cooperate with one another to avoid predation.

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.

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