Which type of rock would be the most likely to contain a fossil?
a.
quartz
b.
obsidian
c.
pumice
d.
sandstone

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Sarah is sitting at the top of the slide in the schools playground. which will increase sarah’s kinetic energy a- an additional child is added to the top of the slide. b- sarah is pushed and moves down the slide. c- sarah climbs down the ladder and off the slide. d- the ladder is moved to the other side of the yard.

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?