Answer:
Most of the heavy metals on earth came from outer space from supernovas
This occurs when stars die
Explanation:
Visit Ted-Ed on You Tube
Type in the origins of gold and take notes
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Enzymes can be denatured in several ways:
1. Lower the temperature: the bonds holding the amino acids together tighten and constrict
2. Increase the temperature: the bonds tighten and constrict
3. Increasing or decreasing the PH levels results in bonds being altered therefore denaturing the protein
Homologous genes carry the same sequence of genes for the same traits. They don't always have the same alleles, though.
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An observation may generate a scientific question, which may lead to a hypothesis. The hypothesis can be tested the experimentation. The results of experimentation lead to changes in scientific knowledge.
