Please help me!! The problem says the temperature is 3 degrees celsius, calculate the new W for each problem:

Alaska and northern canada have a diet rich in vitamin d and their skin color is darker than predicted on the basis of iv intensity at their latitude. explain the observation:

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)