Questions with Verified Rationalized Answers
(Complete Exam Preparation Material)
INTRODUCTION:
This document provides a comprehensive collection of practice
exam questions and answers on the subject Human Events and the
Environment. It covers key environmental concepts including
climate change, deforestation, biodiversity, sustainability,
pollution, renewable energy, urbanization, agriculture, and
conservation strategies. Each question is paired with rationalized,
verified answers to ensure clarity and exam readiness. The material
is structured to guarantee a full passing score and serves as a
complete study resource for students preparing for environmental
science and related exams.
EXAM QUESTIONS AND ANSWERS:
Sedimentation accumulation found in bodies of water can be the
result of _______.
a.
fertilizer runoff
b.
,pesticides and herbicides
c.
erosion from agricultural practices
d.
all of the above --- correct answer ---C. Erosion from agricultural
practices
Siphoning of wetlands in Iraq has led to _______.
a.
rising sea levels
b.
drought
c.
an increase in biodiversity
d.
them becoming arid desert --- correct answer ---D. Them becoming
arid desert
Polluted water can contribute to _______.
a.
drought
b.
, increased CO2
c.
deforestation
d.
glacial melting --- correct answer ---A. Drought
How does sedimentation affect bodies of water? --- correct answer
---Sedimentation causes increased turbidity, which results in lower
levels of light being able to pass through bodies of water. This leads
to lower plant production. Sedimentation, therefore affects the food
web. Also, sedimentation leads to erosion and habitat loss.
Sedimentation in wetlands can lead to a loss of wetland function,
which includes the filtration of pollutants from water.
Explain how tillage has negative effects on the environment. ---
correct answer ---Tillage can cause an eventual loss of soil
production. Tillage causes the movement of material in soil which
can result in pollutants accumulating in top soil, where they can
then be carried into nearby water sources. Tillage can also cause an
increase in erosion rates, which leads to higher rates of
sedimentation for local water sources. Soil quality is also decreased
by the destruction of earthworm pathways and root channels
caused by tillage.