Sort the questions based on whether they are better answered by an observational study or a controlled experiment.

Observational Study:  Why does a rolling ball slow down and How effective is a new toothpaste in reducing cavities.

Controlled experiment:  How does the daytime temp affect the formation of dew, Which is a better absorber of heat and Can plants prepare food in artificial light

Explanation:  i just took the test and these are the correct answer.

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

click to let others know, how is it

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