Which system has harder parts as well as softer parts
A)nervous
B) endocrine
C)skeleton

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

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

How many moles of cu are needed to react with 5.8 moles of agno3? cu + 2 agno3 → cu(no3)2 + 2 ag