Ecology Test Review

Some factories have a negative impact on Earth's ecosystems because they

• have high energy demands that require the use of fossil fuels
• utilize agricultural technology that decreases soil erosion 
• increase industrialization
• use a natural-gas grill to barbeque instead of using charcoal

Most scientists recommend reducing carbon dioxide emissions. Less carbon dioxide in the atmosphere would be expected to

• reduce the rate of global warming 
• increase damage caused by acid rain 
•    decrease the number of biotic factors in ecosystems 
• reduce destruction of the ozone layer

An organism that produces its own food supply from inorganic compounds is called a(an)

• heterotroph
• consumer
• detritivore
• autotroph

What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

Deforestation of areas considered to be rich sources of genetic material could limit future agricultural and medical advances due to  

• the improved quality of the atmosphere
• an increase in the rate of evolutionary change
• the maintenance of dynamic equilibrium
• the loss of biodiversity

As you move upward, from level to level, in an energy pyramid, energy _____.

• increases
• decreases
• stays the same
• increases exponentially

Which process uses oxygen in plants, algae, and animals?

• photosynthesis
• respiration
• chemosynthesis
• transpiration

A jar has two fish in it. What will happen?

• Carbon dioxide will increase
• Oxygen will increase
• Carbon dioxide will decrease
• Nitrogen will decrease

largest number of individuals of a population that the environment can support  

• carrying capacity
• primary succession 
• denitrification
• mutualism

the process by which a new community replaces another community that has been partially ot totally destroyed 

• exponential growth
• primary succession
• secondary succession 
• succesion