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What is global warming?
Global warming is the enhance in the temperature of the planet due to accumulation of some gases in the atmosphere, especially gases that retain the solar energy reflected by the planet surface. The major gas that causes the global warming is carbon dioxide, CO2, but other gases act as "warming gases" too, like methane, CH4, and nitrous oxide, N2O. The exaggerated enhance of carbon dioxide in the atmosphere has been caused by the burning of fossil fuels (mostly oil and coal) in industrial and urban societies and by forest fires. (It is significant to note that the natural warming given by gases of the atmosphere is fundamental for the maintenance of the planet temperature.)
Angiosperms are the flowering plants. They first appeared at least 110 million years ago from the unknown gymnosperm ancestor, these flowering plants have risen to dominance in th
What is the prevailing wind direction in equatorial regions affected by the trade winds? a) The wind blows from east to west b) the wind blows from west to east.
Which of the following serves as an effector, or as part of an effector, that functions in a negative feedback system? A. Glucagon Receptors in the plasma membranes of alpha-is
Air can enter a plant through the leaf Procure a leaf with a long stalk to it and seal it into a hole through a cork. Fit this with a side tube, and seal the cork into a flask
what is the pH inside the stomach?Why is there a need to keep that pH level? How is it maintained?
PLACEN T A - Placenta is the intimate connection between the foehls and the uterine wall of the mother to exchange the materials. Placenta is a tempormy endocrine gland
Cholesterol is a steroid. It is very significant constituentof cell membranes in mammals, it modulates their fluidity. Cholesterol is also the precursor of steroid hormones such
Louis Pasteur (1860-1862) French): Even after the experiments of Spallanzani, the conflict of a biogenesis and biogenesis continued well into the middle of 19 th century till
Q. Is a viral infection treated with the same kind of drug that treats bacterial infections? The Antibacterial drugs, potent against a great variety of bacteria, are not effect
Q. What is the glycolysis? And what are the products of this process? Glycolysis, the first stage of the aerobic cell respiration is a process in which glucose is degraded brok
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