Area of Mid-Summer Bottom Water Hypoxia
(Dissolved Oxygen < 2.0 mg/L)
long-term average_
Area (square miles)
What is the most likely explanation for the smaller size of the hypoxic zone in the year 2000?
Decrease in the amount of sediments carried into the Gulf
Increased growth of phytoplankton
An increase in fertilizer dumping in rivers
Decreased amounts of phosphorus and nitrogen in the Gulf

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