Why do you think so many different foods are provided at one meal?

An easy way to calculate the amount of energy available at each level is to what?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

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.