Answer:
The species that make up an ecosystem are connected in complex 'food webs' of eater and eaten. When one species disappears, its predators can no longer eat it and its prey are no longer eaten by it. Changes in these populations affect others. Not only that but the ecosystem would be dramatically different or cease to exist altogether.
Answer: Lab safety rules. Hope this helps
Answer:
one is a chain and one is a web
Explanation:
Answer:
Whether the animal has a vertebral column or not.