The correct answer is A. The community of organisms together with the environment in which they live.
An ecosystem is a biological community of interacting organisms and their physical environment. It is all of the living things in an area, together with the non-living things that they need to survive and thrive. The non-living things include air, water, soil, sunlight, and minerals.
Ecosystems can be small, like a pond, or large, like a forest. They can be found on land, in the water, or in the air.
Ecosystems are important because they provide us with food, water, and air. They also help to regulate the climate and protect us from natural disasters.
Here is a brief explanation of each option:
- Option B: The abiotic component of a habitat. The abiotic component of a habitat is the non-living part of the environment, such as air, water, soil, and sunlight.
- Option C: The part of the earth and its atmosphere which inhibits living organisms. This is a very broad definition of an ecosystem, and it does not include the interaction between organisms and their environment.
- Option D: A community of organisms interacting with one another. This is a good definition of a community, but it does not include the non-living environment.
I hope this helps!