What is feedback in a system? the regulation of a system by the output
the balance of competing factors in a system
the behaviors of the different components of a system
the definition of what is part of the system and what isn’t

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

Are oil and water a mixture or solution

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?