Evidence that the plates move can be found at spreading centers. New rock is found at spreading centers, and temperatures are hotter at spreading centers. What is the 3rd observation at spreading centers that geologists make

What causes darkening of the skin as melanin production increases

Cassandra made a venn diagram to compare and contrast the two stages of cellular respiration. which belongs in the area marked x? energy is released. oxygen is used up. glucose is broken down. carbon dioxide is used up.

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid