1. The amount of friction is determined by A. the kind of surface
B. the force between the surfaces
C. the temperature
D. both A and B

Average annual precipitation and are the two major features that define the biomes on earth.

What feature of cell theory is best demonstrated in the image

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. the following chemical equation shows the combustion of ethane. balance the equation by filling in the coefficients. c2h6 + o2 → co2 + h2o