Exam 4: Ecosystems: What Are They, and How Do They Work

What is characteristic of an autotroph? 

The water cycle,hydrogen cycle,phosphorus cycle,and oxygen cycle are all ______________________________.

How do water molecules behave? 

Landscape ecology focuses on laboratory experiments to better understand one species' role in the landscape.

Which element could be called the "currency for energy exchange in living systems"? 

What does topsoil contain? 

Which major plant nutrient is most likely to be a limiting factor for growth? 

SOLAR -Which letter in the diagram indicates the process that represents what happens to most of the UV radiation that enters the Earth's atmosphere?

Which is often a limiting a limiting factor on terrestrial ecosystems? 

The following is an example of a typical food chain: grass-mouse-grasshopper-snake-hawk.

Through what is soil most directly produced? 

SOLAR -Which letter in the diagram indicates the process that involves water vapour,carbon dioxide,methane,nitrous oxide,and ozone?

SOIL -Which letter in the diagram indicates the type of soil that is composed of bedrock and supports moss and lichen?

In which ecosystem is a pyramid of biomass most likely to be distorted? 

An ecosystem includes communities,populations,and individual organisms.

What is associated with condensation nuclei? 

Bacteria are more important in the ______________________________ than in the carbon or phosphorus cycles.

What is a biotic factor? 

What is an organism that feeds on plants called? 

An ecosystem's nutrient cycle cannot be described.