Biomes, Ecosystems, & Cell Theory Review

Which of the following describes a population?

• The total number of people, animals, and plants in New York City

• The total number of houses in Atlanta

• The total number of people living in the state of Texas

• The total number of fish in all the world's oceans

What might happen if the earth exceeds its carrying capacity?

• There might not be room for people to move around.

• There might not be enough food and water for everyone.

• The continents might sink into the oceans.

• Most of the people on the planet would starve.

Which of the following is an example of an abiotic limiting factor on population size?

• water availability

• Availability of food

• disease

• predation

Temperature, light, air, water, and soil are all  _____  parts of the environment

• alive
• biotic 
• abiotic
• living

A living or once-living organisms in an ecosystem is a

• population
• biotic factor
• abiotic factor
• community

Which of the following is not an abiotic factor?

• sun
• temperature
• soil
• grass

A nonliving element in an ecosystem is an 

• animal
• abiotic factor
• biotic factor
• organism

_______________ are the living factors in an environment and may include food sources and other populations.

• Community
• Competition
• Biotic factors
• Population

When predator numbers decrease, prey numbers ____________ because fewer of them are being consumed.

• decrease
• increase
• stay the same
• divide in half

If there is an increase in deer hunting, this means the deer population is going to__

• increase
• decrease