Xander lit his bunsen burner. he then reached over the burner to get his chemicals. he performed the lab, but at the end, he dropped a test tube on the ground. he immediately told his teacher, who cleaned it up so he could finish the lab. once finished, he then cleaned up his area. which best describes his error?

What are the major types of a chemical compound

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?