9.18273645  Round off to 4 sig fig

Chromosomes separate during

Which is NOT a number that is used for conversions in the American Standard system?

Some bacteria were measured to be 0.000456 meters long.   How many significant figures are there?

9.18273645  Round off to 2 sig fig

Science is said to be AMORAL.  This means that science

Crosses between F1 individuals resulting from the P1 cross AABB x aabb lead to F2 phenotypic ratios close to  

Refer to the figure.        According to the figure, how does the amount of nitrogen entering the atmosphere from human activities compare with the amount entering from land-based natural sources? (All values are in units of 1012 grams.)

The animal phylum with the most species is

To measure the amount of a substance, on would use ___ observations.