Ecosystems Part 1

living parts of an ecosystem

• rocks

• water

• abiotic factors

• biotic factors

nonliving parts of an ecosystem

• trees

• bacteria

• abiotic factors

• biotic factors

When a population grows past the ecosystem's carrying capacity, what happens to the population?

• It continues to grow higher and higher.

• The population starts to die off and returns to the carrying capacity.

• The population will go extinct due to lack of resources.

Something in the environment that keeps a population from steadily increasing is known as

• a limiting factor

• population density

• the carrying capacity

• reproduction

In a forest ecosystem, which of the following is NOT an example of a limiting factor that would greatly affect a rabbit population?

• a rainy season

• a disease that causes rabbits to die

• grass available to eat

• the population of hawks that eat rabbits

What is a limiting factor?

• a resource that can limit the size of a population

• a resource that can increase the size of a population

• a living organisms in an environment

• a nonliving factor in an environment

When there is a lack of resources such as food, water, sunlight, shelter, and space this is often called __________.

• limiting factors
• wet
• messy
• found in rocks

A duck population normally begin migrating south right after the last rain of the late summer season. Suddenly, they’re migrating much earlier. The climate has been changing far too often which is altering the effects of their magnetite.

• Predator-Prey Relationships

• Weather

• Herbivory Effect

• Competition

Food, water, sunlight, shelter, and space are resources that are  __________.

• limiting factors
• wet
• messy
• found in rocks

When all the ecosystems on Earth are combined it is called...

• a community.

• a biome.

• a biosphere.

• an Earthsphere.