1. Enzymes are catalysts because they lower the
of a chemical
reaction,
A. substrate
B. induced fit
C. temperature
D. activation energy

D. activation energy

Explanation:

A catalyst lowers the activation energy of a reaction. Activation energy is the initial amount of energy needed to set a reaction into motion. Catalysts, including enzymes, can lower the activation energy to speed up reactions and make them easier to initiate.

they each offer a fresh glut of resources to the organisms that can arrive and exploit them. as individuals and new species continue to appear, they actively and passively alter the environment. competition for shared resources increases, local abiotic and biotic conditions shift, and the relative abundances of species change accordingly. the process is called ecological succession, and it is one of the earliest and most well-known concepts in ecology.

explanation:

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