Which of these statements about nonrenewable resources is true? O They are inexpensive.
O They help keep the air clean.
O They can take millions of years to form.
O They are used because they are easily removed from the ground.

How does an observation about an object differ from an inference about that object

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions

Which is the most accurate name for the covalent compound p2o3?