Which organism has cerebral ganglia in its head connected to ladder-like arrangements of nerve fibers? flatworm

seahorse

spider

frog

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

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

Which organ controls breathing? lungs alveoli heart diaphragm