Exam 5: Biodiversity, species Interactions, and Population Control

What refers to the ability of a living system to be restored after a period of moderate to severe disturbance?

What is said to occur when one organism feeds on another organism by living on or in the other organism?

In communities and ecosystems the types and numbers of species change in response to changing environmental conditions.

Plants such as bromeliads share a commensalism interaction with large trees in tropical and subtropical forests by attaching to the trunks or branches of the trees.The bromeliads are an example of ____.

Each population in an ecosystem has a ____ to variations in its physical and chemical environment.

Use the figure above to answer the following question(s). -What does it mean when a population uses up their resource supplies and temporarily overshoots? Which letter on this graph represents when this has occurred to a certain reindeer population?

Animal predators tend to kill the sick,weak,aged,and least fit members of a species because they are the easiest to catch.

Bad-tasting,bad-smelling,toxic,or stinging-prey species advertise their characteristics using ____________________.

____________________ occurs when a member of one species feeds directly on all or part of a member of another species.

The primary reason why southern sea otter recovery is important is because they ____.

What method of hunting prey do Arctic foxes use?

When two or more species compete with one another their niches are said to ____________________.

Grasslands have ____ and can burn easily.

The maximum population of a given species that a particular habitat can sustain indefinitely is the definition of ____.

At the population level,parasites are always harmful to the host species.

The relationship between bacteria that live in the digestive systems of animals,such as humans,is ____.

Humans are exempt from population overshoot and dieback.

Kelp forests help reduce ____ by blunting the force of incoming waves and trapping some of the outgoing sand.

Kelp forests are a very important ecosystem in marine waters by supporting important biodiversity.These kelp forests are threatened by all of the following except _____.

Describe what happens when species partition resources.