The lock-and-key mechanism refers too the complementary shapes of an enzyme and a substratethe attractive forces between an enzyme and a substrate. o the ability of an enzyme to lower the activation energy of a reactiono the ability of an enzyme to "unlock" the products of a reaction

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity

What process decreases the salinity of ocean water? decreased precipitationdecreased melting of glaciersincreased evaporationincreased runoff from rivers