All chapters HSCI 3051
questions and answers Graded
A+ 2026/2027 edition
Autotrophs include plants which use 0.1% of energy from the sun. -
✅✅True
Humus is a rich organic mat formed from a litter of fallen leaves that
decay. - ✅✅True
A biome characterized by a broadleaf deciduous forest and autumn leaf
fall is the: - ✅✅Temperate forest
Permafrost is: - ✅✅A permanent layer of ice or frozen soil beneath
the thin layer of topsoil in the Tundra
Which of the following characteristics is true about the tropical
rainforest? - ✅✅It has an extremely fertile ground. Maybe
When soil conditions are disrupted, but there remains topsoil and some
limited vegetation, succession can: - ✅✅Take place much more
quickly
,Once nitrogen is formed into complex organic molecules, it may be
recycled back to atmospheric nitrogen by: - ✅✅Denytrifying bacteria
Denytrifying bacteria - ✅✅Perennial grasses, dry zones and sporadic
woods in wetter areas
Describe why sources of phosphate are being depleted rapidly. -
✅✅THE SOIL LOSES PHOSPHORUS WITH EVERY PLANT
HARVESTED.THE SOIL LOSES PHOSPHORUS WITH EVERY PLANT
HARVESTED.
Macronutrients include carbon, hydrogen, nitrogen, oxygen,
phosphorous, and sulfur. - ✅✅True
What is the tragedy of the common? - ✅✅AN OVERCONSUMPTION
OF A PRODUCT
It takes how many years on average to form an inch (2.5 cm) of soil -
✅✅200 yrs
Tropical rainforests occupy lmore than 15% of the global land area. -
✅✅False
,The most fertile soils for growth of food are located in ___________. -
✅✅Europe, Asia, North America
Methods of gene transfer in plants may use a ___ that puts the
desirable genetic fragments into the plant. - ✅✅Gene Gun
Soil nutrients are composed of macro and micro nutrients - ✅✅True
Which percentage of the world is undernourished (lack calories) -
✅✅11% maybe
What type of wetland zone is usually characterized by a stagnant,
acidic, nutrient-poor ecosystem filled with peat and sphagnum moss? -
✅✅Bogs
Many LDC's still collect wood for energy needs of cooking and heating. -
✅✅True
Julian Simon and Paul Ehrlich, agreed on the premise ,that as
populations grow, natural resources will become depleted. -
✅✅False
Define the term food security and discuss the reasons leading to food
insecurity among many nations worldwide. - ✅✅Food security is
, when we have reliable access to food and we are able to afford it. Some
causes that lead us to food insecurity are climate change, population,
and poverty.
The main reason for food shortages in eastern Africa derive mainly
from the wastefulness of food in developing countries. - ✅✅False
The most significant threat to biodiversity today is ________________.
- ✅✅the elimination of habitat
There is unanimous agreement that overpopulation is the primary
threat to global instability and environmental degradation. -
✅✅False
Methods of gene transfer in plants may use a ___ that puts the
desirable genetic fragments into the plant. - ✅✅Gene Gun
The current world growth rate is closest to ______ - ✅✅1.4%
Which country is most associated with genocide? - ✅✅Rwanda
Exponential growth and Logarithmic growth are the same - ✅✅True
questions and answers Graded
A+ 2026/2027 edition
Autotrophs include plants which use 0.1% of energy from the sun. -
✅✅True
Humus is a rich organic mat formed from a litter of fallen leaves that
decay. - ✅✅True
A biome characterized by a broadleaf deciduous forest and autumn leaf
fall is the: - ✅✅Temperate forest
Permafrost is: - ✅✅A permanent layer of ice or frozen soil beneath
the thin layer of topsoil in the Tundra
Which of the following characteristics is true about the tropical
rainforest? - ✅✅It has an extremely fertile ground. Maybe
When soil conditions are disrupted, but there remains topsoil and some
limited vegetation, succession can: - ✅✅Take place much more
quickly
,Once nitrogen is formed into complex organic molecules, it may be
recycled back to atmospheric nitrogen by: - ✅✅Denytrifying bacteria
Denytrifying bacteria - ✅✅Perennial grasses, dry zones and sporadic
woods in wetter areas
Describe why sources of phosphate are being depleted rapidly. -
✅✅THE SOIL LOSES PHOSPHORUS WITH EVERY PLANT
HARVESTED.THE SOIL LOSES PHOSPHORUS WITH EVERY PLANT
HARVESTED.
Macronutrients include carbon, hydrogen, nitrogen, oxygen,
phosphorous, and sulfur. - ✅✅True
What is the tragedy of the common? - ✅✅AN OVERCONSUMPTION
OF A PRODUCT
It takes how many years on average to form an inch (2.5 cm) of soil -
✅✅200 yrs
Tropical rainforests occupy lmore than 15% of the global land area. -
✅✅False
,The most fertile soils for growth of food are located in ___________. -
✅✅Europe, Asia, North America
Methods of gene transfer in plants may use a ___ that puts the
desirable genetic fragments into the plant. - ✅✅Gene Gun
Soil nutrients are composed of macro and micro nutrients - ✅✅True
Which percentage of the world is undernourished (lack calories) -
✅✅11% maybe
What type of wetland zone is usually characterized by a stagnant,
acidic, nutrient-poor ecosystem filled with peat and sphagnum moss? -
✅✅Bogs
Many LDC's still collect wood for energy needs of cooking and heating. -
✅✅True
Julian Simon and Paul Ehrlich, agreed on the premise ,that as
populations grow, natural resources will become depleted. -
✅✅False
Define the term food security and discuss the reasons leading to food
insecurity among many nations worldwide. - ✅✅Food security is
, when we have reliable access to food and we are able to afford it. Some
causes that lead us to food insecurity are climate change, population,
and poverty.
The main reason for food shortages in eastern Africa derive mainly
from the wastefulness of food in developing countries. - ✅✅False
The most significant threat to biodiversity today is ________________.
- ✅✅the elimination of habitat
There is unanimous agreement that overpopulation is the primary
threat to global instability and environmental degradation. -
✅✅False
Methods of gene transfer in plants may use a ___ that puts the
desirable genetic fragments into the plant. - ✅✅Gene Gun
The current world growth rate is closest to ______ - ✅✅1.4%
Which country is most associated with genocide? - ✅✅Rwanda
Exponential growth and Logarithmic growth are the same - ✅✅True
