any kind of enzyme
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A catalyst is a substance that initiates or accelerates a reaction. The catalyst will vary depending on the reaction so it is not possible to give a definitive answer to the question.
In the state of Illinois, a biological father cannot give up his rights to the mother, but he can sign over his rights to another male. For example, a step father
This is my biological father.
DDT is a prime example. It affected Gerbes (a water bird), who ingested fish contianing the toxins after they ate midges.
If the question is to give examples of biological in a sentence. " ...This is Biological evidence." or " Biological studies show that... "
Unless she had an epiphany before he was born, her son would be named Gavin.
Keyshia Cole's biological mother was on drugs.
One example of weathering is when rocks are broken down into smaller pieces by the process of frost action. Water seeps into cracks in rocks, freezes, expands, and eventually breaks the rock apart into smaller fragments.
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Leif Ericson named the various lands he landed at for geopraphical features. For example, he named Vinland for it's great grass fields, and Markland for its forests.