1.) How would you make 100mL of a 20% EtOH solution starting with 100% EtOH and water? 2.) How would you make 100mL of 0.25M solution of NaCl? 3.) Explain how you would make 500mL of a solution containing 0.20M of NaCl (58g/m) 0.005M EDTA (342g/m) and 0.10M Tris (121g/m) starting with solids and water.

Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors

Several billion years ago which gas was the least prevailant in the atmosphere

Suppose that on a small island off the coast of scotland, 32 percent of the population has blue eyes, which means that these individuals must be homozygous for the blue eye color gene (bb). the only other eye color found on the island is brown, and individuals that are homozygous for the brown eye color gene (bb) or heterozygous (bb) will have brown eyes because brown is the dominant gene. assume this population is in hardy-weinberg equilibrium. if 100 babies are born next year, how many of these would you expect to have brown eyes and be heterozygous? a. 58 b. 49 c. 29 d. 43