15.2 outline guide or worksheet

Chapter 15.2

Vocabulary:
Arable land
Manure
Fertile soil
layers of soil
Surface liter
Topsoil
Zone of leaching
Subsoil
Rock particles
Bedrock
Chemical weathering
Erosion
Degradation
Desertification
Fallow
Conservation
Contour plowing
Terracing
No-till farming
Compost
Salinization
Pest
Pesticides
Suffix -icides
Pesticide resistance
Persistent pesticide
Biological pest control
Pathogens
Plant defenses
Chemicals from plants
Disrupting insect breeding
growth regulators
pheromones
sterilization
Indigenous
Invasive
Integrated pest management
Genetic engineering
Sustainable agriculture
Low-input farming




Questions: Section 15.2

What makes fertile soil healthy to plants?

What were crops traditionally fertilized with?

How do plants help prevent soil erosion?
What part of the plant holds the soil?

Why is soil conservation important?

Why are there less pests in North America than in more tropical climates?

Name two ways insecticides can harm people?

Name two beneficial insects. How are they beneficial to people?

What are possible problems caused by genetic engineering?

What is the difference between traditional plant breeding and genetic engineering?

How many insects and earthworms per hectare? (table 2)

How many bacteria per gram? (table 2)

Which soil layer has most plant roots in it? (figure 8)

Ants and insects break up and aerate the soil in which soil layer? (figure 8)

What area of North America has the highest vulnerability to erosion? (figure 9)

What does figure 10 show? What year had the highest use of inorganic fertilizer?

What do grass hoppers eat in figure 13?

Are parasitic wasps a good thing for our crops?

What is organic agriculture?

How does the Bt gene get into corn plant? (figure 17)