For some reason, it didn’t let me type an answer.
Short run is a period of time when we can change only variable factors not fixed factors.
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... :)
They are both the directing to the same thing.
The second one “Aluminum and steel are good conductors of electricity.” Plastic would not be because it is a insulator. Wood is not a conductor nor a insulator.
