Answer:
At high temperatures the shape of the enzyme is altered so that it is no longer complementary to its specific substrate. This effect can be permanent and irreversible and is called denaturation
The Cambrian Explosion is when diverse animals were first recorded as fossils.
Enzymes acts as a catalyst in chemical reactions to speed up the rate of reaction.
Enzymes are not necessarily needed because substrates can disintegrate on their own, but enzymes are helpful to aid this process.
Explanation:
1. they are convenient to use 2. it helps the international tade 3. it eases the exchange of material
