The earth is similar to the planet venus in that:
a. both have an atmosphere with mostly nitrogen
b. both are solid (as opposed to a gas)
c. both orbit the sun in the same amount of time

As water is cooled from 4 c to 0 c its density

Read the article about the fraser river, one of the most important rivers in canada. what is the most important species of fish in this river? why are the numbers of these fish declining?

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted