Tommy and Teagan are learning the process of good home gardening and decide to help their parents as best as they can. Every day they walk along rows of bean plants, carefully inspecting each plant for harmful insects, and removing any that they find
However, the bean plants do not grow well, and few beans form. Their parents notice the poor beans, inspect the plants and soil, and tell the children that walking around the plants every day has hurt the plants by ________.
A) converting the topsoil into clay
B) compacting the soil, decreasing aeration and infiltration
C) increasing soil aeration and killing soil microorganisms
D) reducing the nutrient minerals in the soil
E) contaminating the soil with toxins leaching from their shoes
Answer: B
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It is commonly thought that a can of beverage will cool faster in the coldest part of a refrigerator. Knowledge of Newton's Law of Cooling
A) supports this common knowledge. B) shows this common knowledge is false.
A(n) ________ region is created by law, treaty, or regulation.
A. administrative B. thematic C. functional D. perceptional
Scientists can measure soil fertility at a local level, just not for large regions
Indicate whether the statement is true or false.
Root causes of unsustainability include all of the following except
a. wasteful use of resources b. Poverty c. rapid population growth d. inclusion of environmental and social costs in market prices e. widespread recycling programs