Across
- 3. A group of organisms of the same species living in a community is called a population.
- 5. All living things (organisms) have a place where they live, called a habitat. Every living organism has particular needs. Organisms live only where these needs are met by the resources available in the habitat.
- 8. are a subset of Earth's aquatic ecosystems. They include lakes and ponds, rivers, streams, springs, bogs, and wetlands. They can be contrasted with marine ecosystems, which have a larger salt content.
- 11. are purely natural ecosystems and their formations are not in any way influenced by human activity.
- 12. is a human made system of plants, animals, and people living in an area together with their surroundings.
- 14. is a living thing.
- 15. is the place where all life as we know it exists. It consists of Earth and its atmosphere.
Down
- 1. is an ecosystem in a body of water. Communities of organisms that are dependent on each other and on their environment live in aquatic ecosystems.
- 2. Non living things
- 4. Members of the same species produce offspring, ensuring that the species will survive.
- 6. is a type of ecosystem found only on biomes. A community of organisms and their environment that occurs on the land masses of continents and islands.
- 7. is a system formed by organisms interacting with each other and their nonliving surroundings in a balanced way.
- 9. are aquatic ecosystems whose waters possess a high salt content.
- 10. organisms cooperate with each other to ensure their survival.
- 13. A group of organisms living together in an ecosystem is called a community. Different species live in a community.
- 15. Living things