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Pollution - Environmental Pollution
Pollution refers to any undesirable change in the physical, chemical or biological characteristics of our environment, i.e. air, water and oil that may or will adversely affect humans or other species and life support systems of our biosphere directly or indirectly. A substance whose introduction into a resource damages the latter's usefulness is called a pollutant. Pollutants are grouped into two broad categories:
The non-biodegradable pollutants such as heavy metals, pesticides, move through the food chain and may get magnified to dangerous levels in higher trophic level organisms. Some of these combine with other compounds and produce toxic substances. However, biodegradable materials such as human and animal wastes, agro-based residues and fertilisers can also pose a threat if their quantities or inputs exceed the Assimilative capacity of the environment.
The article entitled "Life on Earth" is trying to make the point that RNA likely included before DNA. Forthis article which of the following is false? A. Chains of RNA nucleoti
Sucrose is commonly used to preserve fruits why not glucose? Ans) Glucose is reactive due to its open-chain form having an aldehyde group.
What are multiple alleles? Is there dominance in multiple alleles? Multiple alleles is the phenomenon in which the similar gene has more than two dissimilar alleles (in normal
what are the animals with respiratory organs?
How to evaluate blanching efficiency? Finally, let us learn how to evaluate blanching efficiency? Normally, two of the more heat resistant plant enzymes, namely peroxidase and
Q. How do taenias obtain food and make gas exchange? The Tapeworms have sucking and hooks structures on their heads (scolex) that fixate the parasite in the gut wall these stru
#what is adaptation?
THEORIES TO EXPLAIN FINE STRUCTURE OF CHROMOSOME (1 ) Multistranded theory Steffenson 1959 - each chromosome composed of two chromatids (Half Chromosome) and each chromat
Define Methods for Estimation of Iron and Haemoglobin? In this section we shall study the procedure involved in estimation of iron in any sample first followed by a review on t
Summary of Accident Causation In the light of above theories it is concluded that the decision of workers to work safe is largely influenced by external factors such as meetin
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