Presentation
Presentation Unit 3- Biology and our universe
- Course
- Institution
Investigate How To Measure Human Activities Which Can Impact The Environment.
[Show more]
Seller
Follow
Pinkpanther786
Content preview
Investigate How To Measure HumanActivities Which Can Impact The
Environment.
, Lichens
Presence of living organisms such as lichens can indicate the level of air pollution within a certain area.
* A lichen, is two organisms functioning as a single, stable unit.
* There are about 17,000 species of lichen worldwide (Vidyasagar, 2016).
•The various types of lichens have varied tolerance levels to pollution, they absorb water and minerals through the
from rainwater, which makes them very sensitive to atmospheric pollution. They are especially sensitive to sulphu
pollution in the air (Air Pollution, 2016).
• Lichens can be prevented from growing as air pollutants are dissolved in the rainwater
* The more lichens the less the pollution. * The less lichens the more the pollution.
Some Examples of lichens are:
• If air is severely polluted with sulphur dioxide there may be no lichens present. If the air is clean, crusty, bushy a
become abundant.
• A few lichen species can tolerate quite high levels of pollution and are commonly found on pavements, walls and
most sensitive lichens are shrubby and leafy while the most tolerant lichens are all crusty in appearance (Woods &
2012).
•Lichen diversity decreases as you move closer into a city. Town areas are less likely to have lichen growth as there
pollution from vehicles, factories, businesses which released into the atmosphere, the further you move away from
more likely you will see lichen growth on trees, rocks etc (ANBG, 2012).
This Photo by Unknown Author is licensed under CC BY-SA This Photo by Unknown Author is licensed under CC BY-SA This Photo by Unknown
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Pinkpanther786. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.96. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83662 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
Recently viewed by you
