An idea that could be traced back to plato is that: a) hybrids showed that species could be changed with time. b) variation was due to imperfections in copies of some perfect ideal form. c) artificial selection of animals by humans proves that evolution can occur. d) acquired characteristics could be passed from parents to offspring. e) worldwide catastrophes caused extinction, followed by creation of new species.

The smallest parts of these that retain their original properties are called

Which describes a grizzly bear’s habitat?

Use the drop-down menus to match each part of the scenario to the correct scientific practice. akira records the speed of a reaction without a catalyst and then with a catalyst. akira creates a reaction without a catalyst and repeats the reaction with a catalyst. akira turns in a written lab report to his science teacher. akira wonders, "will adding a catalyst speed up this chemical reaction? " akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowers the activation energy needed to get the reaction started.