A hypothesis is tested by ___. a. proposing a theory
b. conducting an experiment
c. making further observations
d. talking with other scientists

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

What will most likely happen when two bromine atoms bond together?