3. Many conditions are required for natural selection to occur. Describe how overproduction of offspring, inherited variation, and struggle to survive all impact reproductive success.
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4. Explain how a new species will impact biological diversity.
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5.Which 2 conditions were necessary in order for life on Earth to begin?

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

Ascientist is examinin the cell is disrupted when she damages one specific type of macromolecule g the function of macromolecules in a cell she notices that movenent of large molecules into and out of

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.