60% of grocery store purchases are not planned
Motor oil or house paint is what needs special handling. i just usually throw away batteries. but i think the right answer is motor oil. it can effect the earth or ground water. <span />
DNA helps scientists to better classify organisms is because each organ has a specific kind of DNA. For an example, brains and hearts have many small types of RNA. So if a scientists see some RNA they know that its a heart or a brain.
