Our Environment

3. A stable state in an ecosystem where species and environmental factors are in equilibrium.
6. Actions aimed at preserving and protecting natural resources.
9. Warming of Earth’s surface due to the trapping of heat by greenhouse gases.
10. Organisms like bacteria and fungi that break down dead organic material.
11. The gradual increase in the Earth's average temperature due to excess greenhouse gases.
12. The increase in concentration of toxic substances in organisms at higher trophic levels.
16. The uncontrolled expansion of urban areas into natural habitats.
17. Long-term alterations in temperature, precipitation, wind patterns, and other climate aspects.
19. The measure of pollution levels in the air we breathe.
22. A linear sequence of organisms where nutrients and energy pass as one organism eats another.
23. A layer in the Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation.
24. Herbivores that feed directly on producers.
26. Catastrophic events caused by natural forces, affecting ecosystems and human life.
27. A complex network of interconnected food chains in an ecosystem.
28. The consequences of cutting down forests, including loss of biodiversity and climate effects.
29. Contamination of water bodies due to harmful substances.
30. The destruction or alteration of habitats that leads to the decline of species.

1. Measures taken to reduce or prevent pollution in the environment.
2. The living organisms in an ecosystem, including plants, animals, and microorganisms.
4. Excessive use of resources, leading to depletion and environmental impact.
5. Organisms that feed on primary consumers, usually small carnivores.
7. Natural resources that can be replenished naturally over time.
8. Substances that cannot be broken down by natural processes and persist in the environment.
13. The non-living physical and chemical elements in the ecosystem, like soil, water, and air.
14. Predators at the top of the food chain that feed on secondary consumers.
15. Each step or position in a food chain or ecological pyramid.
18. The wearing away of the soil by water, wind, or other natural agents.
20. The transfer of energy from one trophic level to another in an ecosystem.
21. Resources that cannot be replenished once they are used up.
25. The breaking up of a habitat into smaller, isolated sections.