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.

List two new traits (structural or behavioral) that each new species of rat might demonstrate as it adapts to the conditions on two of the four islands. choose only two islands that are described in the lesson. record the island latter and the major habitat feature of the island. then list two new traits each rat subspecies might demonstrate in order to survive the habitat on that island. note: new traits should be unique to that island and be in response to that island’s habitat feature. i cannot remember islands that were names in the lesson so only answer if you have done the lesson (5.13 life science 7b) choose 2 of the islands and describe a structural and a behavioral trait for a rat on each island so 4 total answers, 2 different structurals and 2 different behaviorals, one for each rat for each island

Which identifies the main purpose of biological taxonomy?

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?