In a controlled experiment, how many variables are changed at a time?

The positively charged subatomic particles in atoms are

A bond formed by the transfer of electrons is

Which is an example of a carbohydrate?

The group of macromolecules that stores and transmits genetic information is

Which of the following is NOT true about water?

A higher pH means

Compounds that are organic

Proteins are polymers made of

Which is a well-tested explanation that unites and explains lots of different scientists' observations and hypotheses?

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