Biological pollution refers to the introduction of organisms or substances from living things that harm the environment. It can be caused by invasive species, bacteria like E. coli, viruses such as hepatitis A, insects, pollen, mold, and animal droppings. Biological pollutants are transmitted through various means like people, water, air, and animals. They can cause health issues in individuals and changes to native populations and communities. Preventive measures include cleaning humidifiers regularly, limiting exposure to allergens and invasive species, vaccination, and calculating bio pollution levels using online tools.

2.  An impact or change in aquatic or terrestrial
environment by Human activity
 Introduction of non-indigenous and invasive
species in environment.

3.  Any harmful substance/ organism coming
from living organisms or by itself, effecting
the lives of organisms living in a particular
environment.

4.  Bacteria( E. coli)
 Viruses( Hepatitis A)
 Insects or just insect’s body parts
 Pollens fro plants/ trees
 Invasive species

5.  Viruses are usually transmitted from
infected people or animals.
 Bacteria are transmitted by debris,
contamination, mosquito etc.
 Contaminated central air handling systems
can be breeding grounds for mold
 If an invasive specie introduced or enter by
chance in an environment
 Droppings and body parts from
cockroaches, rodents

6.  Parasitic germs effect at an individual level
 A change in genome may occur in a
population by introduction of an invasive
 A community may effected by dominance, or
elimination of native species
 Change in chemical/physical conditions may
effect a habitat

7.  Asthma
 Lethargy
 Allergic reaction by repeated exposure to an
allergen
 humidifier fever, associated with exposure to
toxins from microorganisms
 Legionella and influenza are known to be
transmitted by air.

8.  Avoid having allergy-causing animals in
homes
 Clean portable humidifiers every third day.
 Minimum introduction to invasive species
 Don’t get contaminated yourself
 Vaccination

9.  Free online tool for calculating bio pollution
level
 It translate the existing data on miscellaneous
invasive alien species impacts into uniform
bio pollution measurement units.

10.  Elliott, Michael (2003). "Abstract: Biological pollutants and
biological pollution––an increasing cause for concern". Marine
Pollution Bulletin. 46 (3): 275–280
 Wang, H., Zhang, W., Chen, L., Wang, J., & Liu, T. (2013). The
contamination and control of biological pollutants in mass
cultivation of microalgae. Bioresource technology, 128, 745-
750.
 Olenin S, Minchin D, Daunys D, 2007. Assessment of
biopollution in aquatic ecosystems. Marine pollution bulletin,
55: 379 – 394.
 https://www.epa.gov/sites/default/files/2014-
08/documents/humidifier_factsheet.pdf