Populations and Communities

An organisms habitat must provide all of the following except

• Food

• Water

• Predators

• Shelter

The nonliving parts of an ecosystem are called

• populations

• organisms

• biotic factors

• abiotic factors

To produce their own food, algae and plants need the abiotic factors sunlight, carbon dioxide, and

• soil

• salt

• water

• bacteria

A ________________ is all the members of one species living in an area

• population

• community

• ecosystem

• species

A group of antelope leaving the herd to search for better grassland would be an example of

• immigration

• emigration

• increasing birth rate

• decreasing birth rate

The number of beetles that live in a particular garden area would be the

• ecosystem

• limiting factor

• population density

• symbiosis

An organism's role in its habitat, or when and how it survives, is called its

• carrying capacity

• ecosystem

• competition

• niche

All of the following are examples of limiting factors EXCEPT

• food

• soil

• space

• weather conditions

Which of the following is an example of a predator adaptation?

• porcupine needles

• shark's powerful jaws

• frog's bright colors

• plant's poisonous chemicals

Which of the following is an example of a prey adaptation?

• An owl's ability to see at night

• A cheetah's speed

• A gecko's coloring blending in to the environment

• A shark's strong jaws