REVIEW: Populations and Communities

What is the term for the organism that hunts and kills.

• Prey

• Predator

• Scavenger

• Herbivore

What is prey?

• The organism that hunts

• The organism that is killed

• The organism that decomposes

• The organism that produces food

Name two different predators to the gazelle from the African Savannah image.

• Cheetah and lion

• Elephant and giraffe

• Zebra and wildebeest

• Hippopotamus and rhinoceros

Name 2 abiotic factors from the African Savannah image.

• Sunlight

• Temperature

• water/precipitation

• Soil

• Rocks

Name 2 biotic factors from the African Savannah image.

• Grass and trees

• Rocks and soil

• Water and sunlight

• Wind and temperature

What are 3 limiting factors that can change the size of a population?

• 1. food/water 2. space 3. weather

• 1. sunlight 2. temperature 3. humidity

• 1. predators 2. disease 3. competition

• 1. migration 2. birth rate 3. death rate

What 3 things can cause a population to change? (not including limiting factors)

• 1. births/deaths 2. Immigration (moves IN) 3. Emigration (moves OUT)

• 1. Climate change 2. Natural disasters 3. Predation

• 1. Food availability 2. Water supply 3. Shelter

• 1. Disease outbreak 2. Habitat destruction 3. Pollution

What is immigration in an ecosystem?

• Organisms move INTO an ecosystem.

• Organisms move OUT of an ecosystem.

• Organisms remain stationary in an ecosystem.

• Organisms change their diet in an ecosystem.

What is emigration in an ecosystem?

• Organisms move OUT of an ecosystem.

• Organisms move INTO an ecosystem.

• Organisms remain in the same ecosystem.

• Organisms adapt to a new ecosystem.

Define carrying capacity.

• The largest amount of organisms an ecosystem can support.

• The maximum speed an organism can achieve.

• The total number of species in an ecosystem.

• The amount of food an organism can consume.