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Envi. Sci chapter 7

Intro to Enviromental Sustanablity chapter 7 test questions

QuestionAnswer
What statement about food production over the past fifty years is true? During this time food production has grown faster then our population
the lesson learned by the Schroeder brothers on their Iowa farm was ___? Soil erosion and nutrient losses are lower with no-till agriculture
what would be considered a monoculture? A 100 acre field, all of which is planted with the same variety of corn
seed banks are important for ____? Protecting genetic diversity
To make organic fertilizer by composting, you do not include _____? Shredded plastic and metals, waste from animal butchering
The process of soil quality declining in productivity is called _____? Soil degradation
Raising ____ requires the most land and water? Beef Cattle
What has been the trend in crop diversity over the past century? We have lost a lot of genetic diversity in plants. in the U.S., fruits and vegetable crops have decreased in diversity by 90% in less then one century.
it is more energy efficient for us to eat more of ____? Plant based foods
Relative to sustainable agriculture, insects' role is as ____? Essential pollinators and predators
Agriculture where a farming family produces only enough food to feed themselves using only small plots of land and small scale, simple technology is ____? Subsistence Agriculture
What is true about GM crops? The United states leads the world in land area dedicated to GM crops.
Arid and semiarid environments cover about ___% of earth's land surface? 40%
In Queensland, Australia, Cactus moths ______? Effectively cleared non native prickly pear cactus from rangeland.
Which of the following is a living museum of genetic crop diversity? Seed banks
Soil forms slowly and is a complex system. when decomposers break down organic molecules, they contribute a dark, spongy an organic material to soil composition called ____? This material improves soil quality. humus
Created by: ZenaAthena
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