What happens in a stationary front?
A. A warm air mass collides with a stationary cold air mass, and
slides under it B . A warm air mass catches up to a moving cold air mass, sliding
over it
C. A cold air mass and a warm air mass meet, with neither moving.
OD. A cold air mass catches up to a moving warm air mass.

Which statement names the physical property of wood a. wood is softer than coal b. wood does not rust c. wood can rot d. wood can burn

Consider the story you just read. all but one of the choices below indicate that something is living.

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?