Living things have various structures that enable them to survive: for example, transport structures in plants allow water and trace elements to move. Similarly there are digestive structures and respiratory structures in animals and reproductive structures in plants and animals that assist in organisms functioning within ecosystems.
Each organism has particular forms of these structures that assist their survival.
In all environments, organisms with similar needs may compete with one another for limited resources, including food, space, water, air and shelter.
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Answer:
All organisms exist within ecosystems.
Living things have various structures that enable them to survive: for example, transport structures in plants allow water and trace elements to move. Similarly there are digestive structures and respiratory structures in animals and reproductive structures in plants and animals that assist in organisms functioning within ecosystems.
Each organism has particular forms of these structures that assist their survival.
In all environments, organisms with similar needs may compete with one another for limited resources, including food, space, water, air and shelter.