Popular Populations,
Cool Communities
Cool Communities
All the organisms of the same species that live in the same area at the same time
Population
The predator hunts animals for food.
The hunted animals are the prey.
What kind of relationship is this?
Predator-prey relationship
A model to show how food chains in a community are interconnected
Food web
The living things in an ecosystem
Biotic factors
A species that has completely died out, with no individuals left.
Extinct species
All the different species that live in the same area at the same time
Community
Some species have such a close relationship that they are almost always found living together.
What kind of relationship is this?
Symbiotic relationship
What kind of organism must be at the bottom of a food chain, food web, or energy pyramid?
Producer
What is the source for almost all energy on Earth?
The sun
A species whose population is at risk of extinction
Endangered species
All the living and nonliving parts of an environment
Ecosystem
Members of a population work together for their survival.
What kind of relationship is this?
Cooperative relationship
How does the amount of available energy change at each trophic level?
The amount of available energy decreases at each trophic level.
Which abiotic factor must all ecosystems contain to support life?
Water
A species at risk, but not yet endangered.
Threatened species
The parts of Earth and Earth's atmosphere where there is life
Biosphere
A shrimp eats the parasites from the gills of a fish. The fish stays healthier because the parasites are removed.
What kind of relationship is this?
Mutualism
What 3 models show the transfer of energy in an ecosystem?
Food chain, food web, and energy pyramid
Name the 6 most common abiotic factors in an ecosystem.
How does human population growth affect other species?
Human population growth negatively affects other species.
As the human population continues to increase, there is less living space, food, and other resources for other species.
Name 4 reasons a population might decrease in size.
Natural disasters, disease, lack of sunlight, lack of prey, lack of water, temperature change, climate change, predators, lack of space, lack of shelter, etc.
A bird makes a nice nest in a tree.
What kind of symbiotic relationship is this?
Commensalism
How do the movements of matter and energy differ?
Matter, like water, moves in a cycle.
Energy moves in a flow.
List two ways the atmosphere is important for life.
1. Provides living things with oxygen.
2. Protects living things from the harmful rays of the sun.
List the 3 ways populations change
Populations can increase, decrease, or move.