When crossing parents with genotypes Rr and rr what will be the percentage of the genotypes of the offspring

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

A1.5l container holds p.50 grams of an unknown gas at a pressure of 0.44 atm and a temperature of 50.c what is the molar mass of the unknown gas