ES Unit 2 Review

All of the lions, tigers and bears in a forest make up a(n)

• community

• population

• ecosystem

• biome

What is the correct order from smallest to largest?

• community, population, ecosystem

• population, community, ecosystem

• ecosystem, population community

• community, ecosystem, population

Which of the following would be considered a provisional ecological service?

• national park

• bees for polination

• trees for oxygen

• crops for food

What type of symbiosis occurs when one organisms benefits and the other is not helped or harmed?

• mutualism

• parasitism

• commensalism

• predation

What is the top threat to loss of biodiversity and extinction of species on Earth today?

• Invasive species

• habitat loss

• overharvesting

• climate change

Abiotic things are __________.

• Living

• Non-Living

• Animals

• decomposers

Choose the best definition for sustainability

• using as many resources as you want, whenever you want

• only using renewable resources and not using many nonrenewable resources

• only using nonrenewable resources and not using many renewable resources

• using only just enough resources that is needed for survival

1. A tapeworm lives in the small intestines where it feeds and grows, robbing the human of essential nutrients. This is a _____ type of relationship.

• parasitic

• mutualistic

• commensalistic

• nonrenewable

A keystone species is best defined as ___.

• an organism that is only found in a single area

• an organism that out competes all others

• an organism that keeps the ecosystem stable

• an organism that has the most advantages

Which of the following is not a type of biodiversity?

• ecosystem diverstiy

• species diversity

• genetic diversity

• biosphere diversity