How have safety concerns about chemicals changed over time?
A.
Government officials rather th...
Chemistry, 07.06.2021 17:40 rockinrachel9099
How have safety concerns about chemicals changed over time?
A.
Government officials rather than scientists decide what chemicals are dangerous.
B.
As scientists have learned more about chemicals, they have become more aware of their dangers.
C.
All nations have agreed to a set of safety standards, so testing chemicals is no longer necessary.
D.
Scientists are no longer as concerned about chemicals because they are much safer today.
Answers: 1
Chemistry, 22.06.2019 09:00
This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.
Answers: 3
Chemistry, 23.06.2019 00:00
#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.
Answers: 1
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