1.
All the living and non-living things in an area are called an ecosystem
2.
A group of organisms of one species that live in an area is a population
3.
All the populations in an area make up a community
4.
Water, air, soil, temperature and sunlight are examples of the non-living parts of an ecosystem
5.
The needs of a community are food, shelter and reproduction
6.
Populations live and grow only where their needs are met
7.
A large ecosystem with generally the same climate and organisms is a biome
8.
All the biomes together make up the biosphere
9.
Any place that has a large amount of rain and thick plant growth is a rainforest biome
10.
The spotted owl is a hunter in its ecosystem. This is its niche
11.
Spotted owls live in the trees and on the land of their ecosystem. This is their habitat
12.
The parts of an ecosystem work together to maintain balance
13.
The biome that has the most variety of species is the Tropical Rainforest
14.
In The Deciduous Forest Biome we might Oaks, Elms and Maples
15.
Pioneers once called the Grassland Biome a "sea of grass"
16.
Bison, antelope, and prairie dogs are hunted by wolves and coyotes
17.
Most of the grasslands in the United States are now farms
18.
In the Taiga Biome we can find trees that have needles which help to hold water during colder months
19.
Areas that receive less than 25 cm of precipitation each year are called deserts
20.
A very cold biome with little rain is called the Tundra Biome
21 Deciduous Forests are the main biomes found in Europe
22.
Losing leaves helps trees save food and water during the winter
23.
Many tropical rainforests are located near the Equator
24.
Overcrowding results if a population grows larger than the carrying capacity of its ecosystem
25.
Tropical rainforests are found on all continents except Europe
26 With the right conditions a population will continue to increase. For example, populations of deer have increased dramatically in recent years due to the decrease in the population of its natural enemy, wolves.

27 Gray wolves eat prairie dogs. If prairie dogs decrease in numbers and farmland increases, gray wolves have to find food and space somewhere other than the Grassland Biomes.
28. Limiting factors, such as the amount of food, water, space and shelter, determine the number of organisms that can live in an ecosystem
29. For Desert plants and animals, water and temperature would be limiting factors.
30. For animals in the Tundra, limited food and shelter would be limiting factors.
31. Some examples of how an organism’s behavior is related to changes in the environment are:
- Some animals may hibernate or change their fur color to blend in
-Trees may drop their leaves to save food and water during the winter