All work carried out by the water cycle is powered by what?

Which of the following could be a long-term health effect of chemical pesticide use? A. reproductive problems B. cancer c. neurological disorders D. all of these Reset Submit

A ph of 2 indicates a

Match the celestial bodies with their descriptions. meteorite, asteroid, meteor, comet, A) an object from space burning up as it enters the atmosphere of a planet B) a small body in space, usually composed of rock or metal C) an object from space

Which physical property can be used to classify oxygen, helium, propane, and hydrogen as being similar? state of matter malleability flammability reactivity

Macy always thought there were only a few hair colors:blond, brown, and black. However, when she actually began looking around, she saw varying shades of these hair colors. What is a possible reason for so many different hair colors

Is a molecule positive or negative?

A friend tells you, because composition does not change during a physical changes, the appearance of a substance does not change. is your friend correct? explain why.

In which direction dose the sun appear to move across the sky

Which is the SI unit for pressure? Pa Torr psi inHg

Write a neutralization reaction for each acid and base pair. a. HI (aq) and NaOH (aq) b. HBr (aq) and KOH (aq) c. HNO3 (aq) and Ba (OH) 2 (aq) d. HClO4 (aq) and Sr (OH) 2 (aq)