Ecology: Ecosystems and Food Chains Online Quiz

Ecology is defined as the scientific study of the interactions among organisms and their environment. Biology is the broader study of life, while zoology focuses specifically on animals.

Tropical rainforests are known for their extreme biodiversity, housing more than half of the world's plant and animal species despite covering only a small percentage of Earth's surface.

Ecosystems are interconnected. If a drought kills plants, the primary consumers (herbivores) that eat those plants will decline, which subsequently impacts the secondary consumers (carnivorous eagles) that rely on those herbivores for food.

Rain is a natural, recurring weather phenomenon that is essential for ecosystems. In contrast, climate change, natural disasters, and human activity often cause long-term or permanent alterations to habitats.

Organisms within an ecosystem are highly interdependent. They rely on each other for food, shelter, and nutrient cycling, meaning they are not independent.

Abiotic factors are the non-living chemical and physical parts of the environment. The Sun is a non-living energy source, whereas trees, worms, and puppies are all living (biotic) organisms.

Biotic factors are living components of an ecosystem. A river is a physical, non-living (abiotic) feature, while zebras, grass, and starfish are living organisms.

Abiotic factors refer to the non-living components of an ecosystem, such as sunlight, water, soil, and temperature. Biotic factors refer to living components.

An ecosystem is defined by the interaction between living (biotic) organisms and their non-living (abiotic) environment.

Decomposers break down dead organic matter. Bacteria, mushrooms, and amoebas are common decomposers. Grass is a producer that uses photosynthesis to create its own food.

Decomposers, such as fungi and bacteria, are responsible for breaking down dead organic material and returning essential nutrients to the soil.

In a food chain, primary consumers eat producers (plants). Secondary consumers eat primary consumers.

Producers, such as plants and algae, are the organisms that capture solar energy through photosynthesis to create chemical energy.

The Sun is the ultimate source of energy for almost all life on Earth, providing the energy that producers convert into food.