3.01 Natural Resource Terms
A natural resource that is colorless and transparent is:
water.
Demography can best be defined as the science of:
human population.
The interconnection of all the food chains in an ecosystem is best called a:
food web.
The largest soil particles are:
sand.
Small pieces of material in the air similar to dust and liquid droplets are best known as:
particulate matter.
A natural resource that can be replaced when it is used up is called:
renewable.
Overpopulation can lead to the lack of proper nutrients, which is best described as:
malnourishment.
The greatest effect humans have had on the environment is the:
destruction of wildlife habitats.
The use of riprap, fabrics, straw, vegetation, or concrete on a creek or roadside bank to prevent erosion is called:
stabilizing.
The two major types of air pollutants are:
suspended solid particles and gases.
The environment consists of all the factors and surroundings that affect:
living organisms.
The biggest concern about the worldwide population explosion is:
the demand for life necessities.
Excess CO in the air from burning fossil fuels, trapping radiation near Earth, is known as:
the greenhouse effect
The soil horizon with the most organic matter is the:
A horizon.
The O horizon in a soil profile is:
not a true soil.
An inorganic substance needed for maintenance, growth, reproduction, and other body functions is called a:
mineral.
The demand for the necessities of life is growing rapidly due to:
the longer life spans of people.
The most accurate term for the use of agricultural practices that assure the future production of crops and livestock is:
sustainable agriculture.
Which layer of soil, also called subsoil, has little organic matter and more minerals than the A horizon?
B horizon
54. If a soil was found to be 80% sand, 10% clay, and 10% silt, the soil would have:
fast drainage.
The act of controlling wild plant and animal species for the benefit of humans is called:
domestication
The concept of having the birth rate equal the death rate is best called:
zero population growth.
The planting of vegetation on excavated soil to hold it in place is a land treatment called:
a cover crop.
Roy was discussing soils with his instructor and was told that granular, platy, and blocky are terms sometimes used to describe soil characteristics. Which soil property was the instructor describing?
structure
While evaluating a soil profile, Juan determined the erosion class to be "none to slight" because:
the top six inches were alike in characteristics.