The illegal capture or killing of an organism, often for money, is called...

• poaching
• harvesting
• fragementation
• extinction

In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?

• There would be an overpopulation of arctic hares and lemmings.
• Polar bears would move to a new ecosystem
• The ecosystem would collapse because it lost its main producer
• Wildflowers would die out from the ecosystem

The most sustainable ecosystem would ...

• have low biodiversity
• have high biodiversity
• not experience change
• have no predators

The reasons for deforestation in the Amazon Rain forest include "overpopulation."

• false
• True

Which biome is the least biodiverse?

• Grasslands

• Taiga

• Tundra

• Rainforest

Why is biodiversity important in fighting disease in food crops?

• It prevents one disease from wiping out an entire food crop.
• It prevents habitat loss of native species.
• It provides different foods for different populations.
• It prevents fungal disease from wiping out corn crops.

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!

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

What is an organism's niche?

• an organisms role in an environment
• where an organism lives
• something that itches
• a predator that is mean

a species that influences the survival of many other species is known as a...

• threatened species

• endangered species

• keystone species

• fossil