Hope this helps. but the answer is a poles.
D is the answer but you put it
Answer:
The biggest thing in the world is a Blue Whale
Explanation:
Hope this helps :)
Answer:
The Food-chain.
Explanation:
For example, animals at the top of the food-chain, in their ecosystem, balance the population. The organisms at the bottom are the producers. Herbivores usually eat the producers which are multiple types of plants. Omnivores and herbivores are prey for the carnivores, but they are also predators to the herbivores. That's all I could really think of... :)