What are the three main components of an ecosystem?

Physical factors, chemical factors, and biotic factors.

Fill in the blank: A natural ecosystem exists independently in nature, while an __________ ecosystem is created by humans.

Artificial

True or False: Herbivores are organisms that can produce their own food.

False. Herbivores are consumers that eat plants; producers are organisms that make their own food.

What role do decomposers play in an ecosystem?

Decomposers break down dead plants and animals, helping to recycle nutrients and replenish natural resources.

Fill in the blank: The first trophic level of a food chain is occupied by __________.

Autotrophs or producers

What is the '10 percent energy flow rule' in ecosystems?

At each trophic level, only about 10% of the energy is passed on to the next level, with the rest lost primarily as heat.

Multiple Choice: Which of the following is an example of a tertiary consumer? A) Grass B) Deer C) Fox D) Lion

D) Lion

True or False: Energy flows in a circular direction within ecosystems.

False. Energy flows in a unidirectional manner, from producers to consumers and does not revert back.

What human activities negatively impact the ozone layer?

The use of synthetic chemicals like chlorofluorocarbons (CFCs) contributes to ozone layer depletion.

Fill in the blank: Biodegradable wastes can be decomposed by __________.

Microorganisms

What happens to energy as it moves through different trophic levels?

The amount of energy available decreases progressively due to energy loss at each level.

Multiple Choice: Which component of an ecosystem includes living organisms? A) Abiotic components B) Biotic components C) Chemical components D) Physical components

B) Biotic components

True or False: The ozone layer helps protect living beings from harmful UV radiation.

True.

What is one consequence of pesticide accumulation in the food chain?

Harmful chemicals from pesticides can accumulate in organisms at the top of the food chain, affecting human health.