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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.
Brain Neurosecretory Cells and their Hormones Kopec was the very first to suggest the role of hormones in controlling metamorphosis. On the base of his experiments on the lar
Give three examples of abiotic factors and explain how they interact. Abiotic factors contain temperature, humidity, pH, salinity, O 2 concentration, amount of sunlight, avail
1. Explain why a gain of function would be a dominant effect and a loss of function would be a recessive effect. Which types of genes are each associated with: oncogenes or defect
Determine the food source for Magnesium? Magnesium is widely distributed in variety of foods and beverages. In plants it is associated with chlorophyll. Thus, green leafy veget
Damage to the amygdalas may make a pearson fearless. Gleb Shumyatsky's lab reported in an article in Cell (2005) that knock out mice [mice lacking a specific gene] lacking the gene
Phytoplankton Stage - Hydrarch In this initial stage, the pond water is poor in nutrients and is devoid of much life. At this stage, the water is incapable of supporting large
Atherosclerosis, the most common part of hardening of the arteries, is characterized by the presence of cholesterol-rich arterial thickenings (atheromas). This progressive diseas
Question 1: Mention the types of IRBs. If the IRB disapproves clinical study, can the sponsor approach another IRB? Justify your answer. Mention different types of IRBs
Enzymes utilization in Brewing Industry Here, the main starting material is malt, produced by allowing barley seeds to germinate under moist conditions. The reserve starch is b
Leghaemoglobin - Factors Influencing Functions of Nitrogenase Leghaemoglobin is a joint product of Rhizobium and the host. It is produced during the maturation of nodule. It i
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