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Q. Is pollution always caused by humans?
In the most cases pollution is caused by human activity. Other species and some abiotic factors though can also pollute an ecosystem. For instance, the red tide is created by proliferation of some algae and volcanic dust is a consequence of the internal activity of the planet.
about benificial microbes
Q. Describe Ecosystem Diversity? Ecosystem diversity means the variation between different types of ecosystems. Different species of animals, plants and micro-organisms interac
If you have a control group for your experience, which of the following statements is true? A. The control group should be identical to each test group with the exception of one va
Describe the uses of pupil Variation in the size, shape or reaction usually indicates some form of disease, disorder or use of medication. The pupil is usually dilated by the u
The ability to maintain myocardial perfusion at constant levels in the face of changing driving presence is termed autoregulation. In normal cases, autoregulation is maintained at
Define Pasteurization and Sterilization - thermal processing? Pasteurization: Pasteurization is a mild heat treatment to kill part of the microorganisms present in food
Alertness and sleep are dependent on the activity of the brain as a whole, although different levels of consciousness are determined primarily by areas of the brain stem. A key ana
Knock-out experiment is a method for deleting, mutating or otherwise inactivating the gene in a mouse. This laborious technique involves transfecting a crippled gene into cultured
Define requirement of energy for Physical activity? This is the most variable and, after BMR, the second largest component of daily energy expenditure. Humans perform obligator
Q. Biological species concept? A biological species as defined by Ernst Mayr are "groups of actually or potentially interbreeding natural populations which are reproductively
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