Chapter 12 Test Review

What is one problem that irrigation can cause for crops?

• The irrigation water competes with precipitation
• Salinization, the buildup of salts in upper soil layers
• It can erode away all the topsoil
• Plants will only use natural rainwater

Organisms that have undergone genetic engineering are often called:

• recombinant organisms
• genetically modified organisms
• polypoloid organisms
• genetically amplified organisms 

What is the name for a chemical that kills organisms that attack or compete with plants we value?

• pest-killer
• overgrazing 
• pesticide
• toxin 

Industrial agriculture includes:

• aquaculture
• monocultures 
• feedlots
• all of these 

Sustainable agriculture includes:

• aquaculture and monocuture
• feedlots and aquaculture 
• Organic & local, small-scale agriculture 
• GMOs and local gardens 

What is a disadvantage of industrial agriculture? 

• Harmful environmental impacts caused by fossil fuels 
• tillage conservation 
• demands a lot of work time 
• small-scale farming so don't produce large quantities of crops 

A secure food supply depends on all of the following EXCEPT:

• Maintain healthy soil and water
• Increased used of fertilizer
• Safe distribution of the food 
• biodiversity 

Organic agriculture & local, small-scale farming describes: 

• industrial agriculture 
• sustainable agriculture
• traditional agriculture 

Physical and chemical breaking of rocks & minerals into smaller pieces is: 

• weathering
• erosion
• deposition 
• decomposition 

What is a benefit of using GMOs?

• reduces use of chemicals because crops are resistant to pests 
• creates superpests 
• reduces soil degradation 
• all of these