All of the populations in an environment.

These organisms feed on the remains of organisms that are left behind by other animals.

All the organisms of the same species that live in the same place at the same time.

A group of organisms that can mate and produce offspring that in turn can produce more offspring.

Animals that do not have a backbone.

The role an organism plays within its habitat.

Which animal is considered a vertebrate?

Which of the following are examples of limiting factors?

This kingdom has organisms that get their energy by feeding on living or dead organisms. They can be single or many-celled organisms that reproduce by spores.

What type of biome has less than 25 cm of rainfall each year and is a very dry environment?

What happens during the nitrogen cycle?

Mutualism is a type of symbiosis in which...

This shows how the amount of energy decreases while the number of organisms decreases.

Plants, algae, and bacteria that make their own food are examples of this.

The type of symbiosis between a tick and a dog is...

Which one is NOT a process in the carbon dioxide-oxygen cycle?

The organism in a food chain that gets its energy from the producer.

This biome has trees that are green throughout the year. The trees have needle-like leaves and produce their seeds in cones.

Vascular plants types of plants have tube-like structures for the internal transport of food and water. Select the ones that are examples of vascular plants.