Final answer:
White-tailed deer hunting can affect vegetation and streams. Increasing global temperatures can alter migration patterns of humpback whales. Flooding along the Nile River can impact various species.
Step-by-step explanation:
The scenarios mentioned will affect the ecosystems involved in the following ways:
- White-tailed deer being hunted at a moderate level in the United States will lead to an explosion in the deer population, which can alter the vegetation and impact the path of local streams, lowering overall biodiversity.
- Increasing global temperatures will alter the migration patterns of humpback whales, affecting their feeding and breeding habits.
- The flooding of areas along the Nile River in Egypt during every rainy season will result in changes to the habitat and can impact the populations of various species.
- A volcanic eruption destroying surrounding populations of trees like spruce and fir will disrupt the ecosystem by removing habitat and food sources for other organisms.