What percentage of the land on earth is usable, for living on, but not for agriculture/farming?
b. what percentage of the land on earth can be used for agriculture/farming?
c. what percentage of the earth's surface is covered by land?
d. what percentage of the earth's surface is covered by water? (from data table on work file)
e. what percentage of land on the earth's surface is inhospitable lands.

Suppose a particular species of tulip plant has three alleles for the gene that codes for flower color. the cr allele produces red tulips, the cp allele produces purple tulips, and the cw allele produces white tulips. cr is dominant over cp and cw, and cp is dominant over cw. for each of the following crosses, determine the expected ratio of offspring for each flower color. cr cp x cp cw cr cw x cp cw 1 red: 1 purple : 0 white, 1 red: 2 purple: 1 white, 2 red: 1 purple 1 white, 1 red: 3 purple : 0 white, 2 red: 0 purple : 2 white, 2 red: 2 purple : 0 white