Enzymes are biological catalysts. ... Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind. This is termed "induced fit", meaning that the precise orientation of the enzyme required for catalytic activity can be induced by the binding of the substrate.on:
The answer is D “ to provide shade for the plant”
This is an eclipse. A lunar eclipse is when the Moon passes through the shadow of the Earth. A solar eclipse is the Earth passing through the shadow of the Moon.