Biodiversity

Which of the following situations is MOST HARMFUL to an ecosystem's food web or food chain?

• introduction of a similar producer
• loss of one of the top consumers
• increase in the population of producers
• disease killing the producers

In a particular habitat, owls eat mice and mice eat grass. If the owl population suddenly grows, then most likely

• the number of mice will decrease and the amount of grass will not change.
• the number of mice will increase and the amount of grass will increase.
• the number of mice will increase and the amount of grass will not change.
• the number of mice will decrease and the amount of grass will increase.

All living and nonliving things that surround an animal are part of its

• food chain
• life cycle
• atmosphere
• habitat

Which habitat exhibits the greatest biodiversity?

• A habitat with 15 different species with about 300 individuals each
• A habitat with 10 different species with about 75 individuals each
• A habitat with 4 different species with about 150 individuals each
• A habitat with only one species with about 2000 individual

Currently sharks are on a rapid decline due to overfishing. If sharks go extinct will this affect the biodiversity of the ocean?

• No, sharks are not important.
• No, sharks will only affect the seal populations.
• Yes, it will disrupt the entire food chain in the ocean.
• Yes, but only a little.

How can humans best help an endangered species avoid extinction?

• they can feed the animals
• they can put the animals in a zoo
• they can protect the animal’s habitat
• they can take the animal to new habitats

Why is biodiversity so important?

• Because all species depend on each other to survive, so if one becomes extinct another species that relies on it could go extinct as well
• Because it’s better to have only one variation of each species.
• Because it better to only have a few species on Earth.
• Honestly, I have no idea what biodiversity is!

What factor does NOT affect biodiversity?

• Urbanization
• Planting Native Plants
• Overfishing
• Pollution

What does biodiversity mean?

• Only one species in an area.
• The different amount of species in an area
• All abiotic life
• Nitrogen fixation

Which option is abiotic?

• Plants
• Rocks
• Animals
• Fungi