Do Now - 2/11 - Science

High biodiversity is 

• having a lot of the same organism.
• having a few of the same organism.
• having a lot of variety of different organisms.
• only having one of each organism. 

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• mutualism
• commensalism
• competition
• parasitism

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism
• mutualism
• parasitism
• predation

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

• keystone

• invasive

• engineer

• predator

A species that does not belong in a balanced ecosystem, comes in, and changes it (usually for the worse).

• flagnship

• umbrella

• invasive

• predator

A species that helps to manage prey populations, which in turn controls the ecosystem's producers (vegetation).

• predator

• keystone

• engineer

• mutualist

A species that creates and/or maintains a habitat, often the basis for an entire ecosystem.

• engineer

• foundation

• predator

• keystone