Ecosystems

2. This is the study of how living and nonliving things interact with their environments.
3. Almost all animals need this!
5. Any living thing.
6. Plants and animals in many ecosystems ___ on other plants and animals in order to meet their needs.
10. All the living, once-living, and non-living things interacting in one area.
12. Many plants and animals are unable to live in a ___ ecosystem because it could not meet their needs!
13. This layer has plants with large leaves the catch the small amount of sunlight that comes here.
14. An organism must be able to find enough food, water, a place for their young to grow and proper temperature to ___.
15. This layer of the rainforest gets the most sunlight.
17. Air, water, and sunlight are examples of ___ things.

1. A tropical rainforest usually has ___ layers.
3. These are tiny plantlike organisms which are food for many other organisms.
4. Scientists use these to show how things interact in an ecosystem, which can help them predict how changes will affect the ecosystem.
7. These are not food, but are required to keep an animal or plant healthy. Many plants get this from the soil.
8. This layer does not receive much sunlight, but is home to a variety of animals and plants, including jaguars.
9. An ecosystem with lots of rain, water, and heat.
11. This layer of the rainforest has the most species of plant and animal life.
16. Heavy ___, constant heat through the year, and lots of sunlight are the main features of a rainforest.