Can the work output of an engine be greater than the source of energy? a. yes, sometimes b. yes, always c. no, sometimes d. no, never

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

This is collection of data made by comparing objects in standard units. in science, the units are metric.

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?