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Home⇒ Everyday Science GK⇒ Ecosystem and biosphere
Note:- You can add tough questions into your favourite list for second revision. |
Q1 ⇒ The natural process of the Earth's
atmosphere heating through the
trapping of reradiated infrared
radiation is known as the greenhouse effect [other wrong options] [Discuss in forum] ![]() ![]() thermal inversion solar heating global warming |
Q2 ⇒ About how much of the world's
land area is tropical rainforest? 0.07 [other wrong options] [Discuss in forum] ![]() ![]() 0.02 0.1 0.15 |
Q3 ⇒ According to your text, what can
"be thought of as the genetic library
that keeps life going on Earth"? the human genome project [other wrong options] [Discuss in forum] ![]() ![]() a bioengineering lab human genes biodiversity |
Q4 ⇒ The world's growing appetite for
what food product is a leading
cause of tropical deforestation? beef [other wrong options] [Discuss in forum] ![]() ![]() pork sugar lamb |
Q5 ⇒ In which of the following areas do
international environmental treaties
exist? all of the above [other wrong options] [Discuss in forum] ![]() ![]() whaling
ocean & pollution fisheries protection of wildlife species |
Q6 ⇒ Until the last half of the 1900s, what
was the primary use for tropical
forests? homes for small populations of native peoples [other wrong options] [Discuss in forum] ![]() ![]() natural resource for timber
companies tourism hiking and camping trails |
Q7 ⇒ Which of the following is NOT one
of the major contributors to tropical
deforestation? the spread of tropical plant diseases [other wrong options] [Discuss in forum] ![]() ![]() the globalization of the wood
products industry grazing of beef cattle on cleared forest lands increasing settlement as a way to alleviate population pressure elsewhere in tropical regions |
Q8 ⇒ Temperate forests are likely to have
which of the following species of
trees? all of the above [other wrong options] [Discuss in forum] ![]() ![]() pine &
spruce maple beech |
Q9 ⇒ Why is cattle ranching not
sustainable in areas that were
formerly tropical forests? Cattle ranching quickly exhausts the nutrient-poor soil of tropical rainforests. [other wrong options] [Discuss in forum] ![]() ![]() Cattle waste is toxic to
rainforest soils The grasses that tolerate the tropical environment are toxic to cows. A & B above |
Q10 ⇒ About what percentage of Earth's
people live in areas where water
shortages are common? 0.4 [other wrong options] [Discuss in forum] ![]() ![]() 0.05 0.1 0.2 |
Q11 ⇒ Which natural disaster causes more
deaths than any other? flooding [other wrong options] [Discuss in forum] ![]() ![]() earthquakes volcanoes fire |
Q12 ⇒ What percentage of Earth's water is
fresh water? 0.03 [other wrong options] [Discuss in forum] ![]() ![]() 0.2 0.4 0.75 |