1.
what are goals of science? choose all that apply. (3 points)

to investigate the natural world
) to establish unchanging facts
to explain natural phenomena
to make useful predictions based on evidence

2.
during a controlled experiment, a scientist isolates and tests (1 point)

a conclusion.
a mass of information.
a control

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

there's the proffessional site that will you.