A scientist is conducting an experiment on the learning abilities of chimpanzees. which of these situations would lead to the least reproducible data?

a: documenting experimental results daily
b: studying many chimpanzees of different ages
c: studying one chimpanzee for several days
d: following steps of the scientific method

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:

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?