|
Showing 1 - 5 of
5 matches in All Departments
Every year for the past few decades during the Southern Hemisphere
spring, chemicals southern polar region to be destroyed rapidly and
severely. Due to depletion of Ozone UV-R reaches on the earth.
Solar UV-R has been divided into UV-A(320-400nm), UV-B(290-320) and
UV-C(100-290) regions. UV-B has the more energetic radiation and is
more strongly absorbed by the day time to latitude, thickness of
the atmosphere and the ozone layer altitude and cloud cover. UV-B
radiation is harmful to living organisms and has detrimental effect
on plant growth, development and physiology. Another effect of UV-B
enhancement on plants includes reduction in yield and quality,
alternation in species competition, decrease in photosynthetic
activities, susceptibility to disease and changes in plants
structure and pigmentation. Some species show sensitivity to
present level of UV-B radiation while other are apparently
unaffected by rather massive UV enhancements.
|
You may like...
Loot
Nadine Gordimer
Paperback
(2)
R383
R318
Discovery Miles 3 180
|
Email address subscribed successfully.
A activation email has been sent to you.
Please click the link in that email to activate your subscription.