1. What claim can you make based on the data in this graph? 2. What EVIDENCE from the graph supports your claim?

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these