If the original cell (parent cell) has 30
chromosomes, how
many chromosomes
will the new cells
have?

What are four key elements of the study of economics?

Which group of chordates does  notpossess true backbones?                 a.  birds      b.  frogs and toads      c.  lampreys      d.  crocodilians

Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide