1. Excessive nutrient runoff into a lake causes rapid algal growth, leading to oxygen depletion and harm to aquatic life. What is this process called?

2. What term describes the variety of life in the world or in a particular habitat or ecosystem, encompassing genetic, species, and ecosystem diversity?

3. What is the process by which nitrogen gas from the atmosphere is converted into ammonia by bacteria, making it usable for plants?

4. Which of the following terms refers to the maximum population size of a species that the environment can sustainably support given the available resources?

5. A species introduced to an ecosystem that outcompetes native species and disrupts the food web is known as what?

6. After a volcanic eruption leaves behind barren rock, what ecological process sees pioneer species like lichens slowly colonizing the area, leading to soil formation?

7. In a food web, if the population of a primary consumer drastically declines, what immediate effect would you expect on its predator population, assuming no other food sources?

8. Imagine a forest where deer graze on plants, and wolves prey on the deer. The wolves represent which trophic level in this food chain?

9. What is the term for a species whose population size is used as an indicator of the overall health of an ecosystem?

10. Which ecological term describes the role and position a species has in its environment, including how it meets its needs for food and shelter, how it survives, and how it reproduces?

11. What is the general term for the process by which chemicals become more concentrated in organisms at higher trophic levels in a food chain?

12. Which of the following describes a symbiotic relationship where one organism benefits and the other is harmed?

13. In a grassland ecosystem, a sudden increase in the population of primary consumers (herbivores) leads to a decline in plant biomass. This illustrates the concept of what kind of population control?

14. What is a group of individuals of the same species living in the same geographic area at the same time called?