Use complete sentences. Look at the picture to answer the question

1. Describe what occurs to each population in the food chain after killer whales are introduced in
1972

2.) How might humans influence the survival of these communities?

Which direction does the energy flow in this energy pyramid ?

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material

The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?