Metamorphic rocks used to be igneous and sedimentary rocks. they were changed into metamorphic rocks by
a. weathering.
ob. volcanic eruption.
c. change in climate.
d. heat and pressure.
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Fredrick griffith made a scientific discovery in 1928

Which of the following is not one of the mechanisms of enzyme catalysis by which the substrate is converted to the product? a. changing substrate orientation b. changing substrate reactivity c. inducing strain in the substrate d. preventing an induced fit d. preventing an induced fit

Which statements about a food chain are true? choose all answers that are correct. a.plants are the first living organisms in food chains on land. b. the plants in a food chain are called herbivores. c. all food chains on land begin with energy from the sun. d. carnivores in a food chain eat only plants.