Name and define three levels of biodiversity. Why is preservation of biodiversit
ID: 89892 • Letter: N
Question
Name and define three levels of biodiversity. Why is preservation of biodiversity essential to human life. True or False. Depletion of stratospheric ozone is a major (direct) cause of global warming. Explain why stratospheric ozone is essential for life (as we know it) on Earth. What was the international agreement that established policy for protecting the stratospheric ozone layer? In what decade was this agreement made? True or False. Colder temperatures in the stratosphere cause greater depletion of ozone by CFCs. True or False. Warming of the troposphere can cause cooling of the stratosphere.Explanation / Answer
Answer to Question Number 9.
Biodiversity term was coined by the entomologist E.O. Wilson in 1986.
Definition: It is the "variability among living organisms from all sources including, among other things, terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species and of ecosystems."
The Three levels of Biodiversity are i) Genetic diversity, ii) Species diversity iii) Ecosystem diversity
i) Genetic diversity:
ii) Species diversity:
iii) Ecosystem diversity:
Answer for question Number 10.
The statement "Depletion of Stratospheric ozone is a major (direct) cause of Global warming" is FALSE.
Explanation: Though the radiation coming from outer space like solar rays contributes to climate change but it is small compared with the total contribution from all other greenhouse gases. Thus it is a cause of Global warming but it is not a major casue as calimed in the statement.
Stratospheric ozone is essential for life:
*********************************
"Montreal Protocol on Substances That Deplete the Ozone Layer" is the International agreement that was established in 1987 to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. This agreement was made in Montreal, canada during 1980-90 decade.
********************************
The statement : Colder tempreature in the stratosphere casue greater depletion of Ozone by CFCs.- TRUE
Explanation: CFCc gases deplets the Ozone layers in the stratosphere and Cold tempreature in the stratosphere allows formation of the more polar stratospheric clouds that resticts the formations of ozone layer. Thus the combine work of CFs and polar stratospheric clouds leads to more damage of Ozone layer.
The statement: "Warming of troposphere can cause cooling of stratospehere. " - TRUE
Explanation: Becasue most of the greenhouse gases are trapped in the troposphere and at the same time the depletion of Ozone layer becasue of Green house gases (CFcs) results in less absorbance of Radiation (i.e heat energy) in the stratosphere.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.