AP PSYCHOLOGY

Detailed explanation-1: -If the needs of the organisms in the ecosystem are not met, they cannot survive. Animals usually need food, water, and shelter. For example: if deer need to eat grass and the place they live in (their ecosystem) no longer has grass, they have to move somewhere else or risk not surviving.

Detailed explanation-2: -Whenever an ecosystem is not in equilibrium, some event has occurred to throw off homeostasis within the ecosystem. This causes organisms to struggle to survive as there might be a reduction in resources or a change in their living conditions.

Detailed explanation-3: -When we introduce external factors such as too much carbon dioxide or methane, it destroys the balance of the ecosystem which in turn affects those who live in it. The result is global warming, water shortage, extinction of species, etc. These impacts every living thing on the planet, which includes us.

Detailed explanation-4: -If an organism is removed from the food chain, it spoils the flow of energy and nutrient in the ecosystem. It disrupts the balance of the food chain. As a result, the organisms which depend on others for food will die due to starvation.