You have a student who wiped the iodine with a tissue paper and the tissue paper turned purple. What does this color change in the tissue paper indicates?

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

What evidence could be used to convince policy makers to change a shipping lane from going through a whale breeding ground? information on the number of all whale species currently alive information on the number of all whales hit by boats in the given area information on the number of whale deaths in the world's oceans information on the number of whale offspring born every year. (a) scientists could collect and combine data on fish populations all around the world to show that their populations are declining. (b) scientists collect and combine data on fish populations all around the world to show that their populations are increasing. (c) scientists work together and use past data to show that fish populations are becoming locally extinct in some areas. (d) scientists work together and use past data to show that some fish populations are adapting to environmental changes.