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... :)
The answer would be D. Because you are not suppose to capitalize "mother" when it follows a possessive noun such as my, our, your, his, her, and their.
