unit 2 basic agricultural science test questions w
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Unit 2 Basic Agricultural Science Test
________________________ resulted in large populations leaving the country in order to
live and work in the cities. - correct answer-Industrilization
_________________________ is a process that plants undergo to make sugars, which are
necessary for the plants' survival and for the survival of animals that feed on the plants. -
correct answer-Photosynthesis
________________management is important to arid countries like Iraq because without
proper conservation methods, crops would quickly die. - correct answer-Water
A genetic engineer might work on a project to create a sunflower that can grow without
sunlight. - correct answer-True
A local farm wants to provide educational seminars for grade-school children. Which of the
following laws would provide the farm the funds to provide this service? - correct
answer-Smith-Lever Act
A vertical farm is: - correct answer-experimental farming inside a controlled dome
AFNR AND POPULATION IMPACT ON THE ENVIRONMENT
Occupational Hazards
In 1789, just seven years after the end of the American Revolution, the new nation's nearly
four million farmers represented fully 90 percent of the country's workforce. Two hundred
years later, the Bureau of Census identified just 2.9 million farmers, comprising just over 2.5
percent of the nation's total workforce. Yet, today's farmers are producing more crops per
acre than at any other time in history. Advances in technology and improvements in
agricultural practices have made it possible for farmers to increase annual crop yields. In
2007, the United States Department of Agriculture reported that American farmers sold $297
billion in agricultural products in 2007, much of it exported for use in other countries.
However, these figures can be a bit deceptive. Nearly 60 percent of all of U.S. farms had
sales of less than $250,000 which, after subtrac - correct answer-
After thousands of years buried deep under the Earth, an organism's remains may convert to
__________ a0 fuels. - correct answer-fossil
AGRICULTURAL AND NATURAL RESOURCES' NEGATIVE ENVIRONMENTAL EFFECTS
Natural resources are those resources that humans use but cannot create; they only exist
because of natural processes. There are a vast number of natural resources. Some
examples include ecosystems, natural soils, water, renewable energy sources like wind, the
sun, and flowing water, nonrenewable energy sources like coal, oil, natural gas, and
minerals. Changes in population and lifestyle have increased demand on natural resources.
Let us focus on the impact of extracting and using natural resources like coal, oil, natural
gas, trees, and minerals.
,Recall that agriculture contributes approximately 80 percent of the pollution that is given off
each year. Agriculture is also a major consumer of our nation's energy. However, agriculture
is necessary to sustain life. Let us look at some of the problems that agriculture and the
extraction and use of natu - correct answer-
AGRICULTURE PERSONNEL SUPPORT SYSTEMS
"A farmer friend of mine told me recently about a busload of middle school children who
came to his farm for a tour. The first two boys off the bus asked, 'Where is the salsa tree?'
They thought they could go pick salsa, like apples and peaches. Oh my. What do they put on
SAT tests to measure this? Does anybody care?"
—Joel Salatin, Folks, This Ain't Normal: A Farmer's Advice for Happier Hens, Healthier
People, and a Better World
Although agriculture contributes about 5 percent of the U.S. economy's Gross National
Product (GNP), the health and well-being of agriculture is essential to the overall health of
the economy. Simply explained, GNP is a statistic which reflects the total value of all of the
goods and services produced in the country over a period of time, minus what we spend on
goods and services imported from other countries. A growing amount of the farm products
raise - correct answer-
Black bears consume berries, leaves, nuts, and meat. Black bears are which of the following
types of consumers? - correct answer-omnivore
By using hot water to generate electricity, both geothermal energy and _______ a0 energy
are able to cut down on the amount of nonrenewable resources used. - correct answer-solar
Carbon dioxide is released when which of the following phenomena occur? - correct
answer-photosynthesis
CAREER CORNER
Hydrologist
Hydrologists solve the problems of quantity, quality, and availability of water.
Reflection
Which of the best practices do you think will make the biggest positive impact on the
environment?
Think about other best practices that you could propose. What are they?
How do you think using renewable energy sources will help the environment?
Hydrologists are scientists that are experts in water. They study and advise on water quality,
water availability, water problems, and other issues relating to water. Hydrologists work with
government agencies, private companies, landowners, and as consultants. A career as a
hydrologist could involve working in the office and in the field. It would most likely include
research and excellent problem-solving skills.
, To become a hydrologist, you need a college degree. You would most likely need a master's
degree or a doctoral degree. Some areas of study that - correct answer-
CAREER CORNER: MARINE BIOLOGIST
Marine biologists study life in the sea. There are many different areas of study within the field
of marine biology. Most marine biologists specialize in one or more of these specific areas.
Some examples include marine mammals, fish, marine invertebrates, marine
microorganisms, marine conditions, marine ecology, and more. Marine biologists could work
in the lab, in the field, for the government, a private company, a research institution or
university, an aquarium, or another place associated with the marine environment.
To become a marine biologist, you would need to earn a bachelor's degree in marine biology
or associated field. Most positions would require that you have a master's degree or a
doctoral degree. - correct answer-
CAREERS IN AGRICULTURAL RESEARCH AND DEVELOPMENT
When the environment is damaged, it may recover on its own, or it may require human
intervention to recover. At times, the environment will be changed permanently and will not
recover. Sometimes, the best recovery strategies are those that prevent damage in the first
place. These strategies are called mitigation strategies. Let us look at some recovery and
mitigation strategies.
Reducing Damage Through Biotechnology
Mechanical Engineer
Mechanical engineers design and develop machines and systems. They may work on a
project to develop a picker or tractor or may work on the design and development of a
system to process crops after they are picked. Mechanical engineers need to understand
physics, math, engineering, design, and more. After completion of an engineering program,
a mechanical engineer may work in a research and development department for a number of
differ - correct answer-
Chemicals that interfere with an organism's endocrine system are known as which of the
following? - correct answer-endocrine disruptors
Communities of plants and animals are called biomes. - correct answer-True
CYCLES IN NATURE
Soil and water are important natural resources that we cannot live without. In order to
maintain quality soils and clean water, we rely on some important cycles in nature. Let us
take a look at three of these cycles: the carbon cycle, the nitrogen cycle, and the water
cycle.
The Carbon Cycle
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