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What are the main constituents of the earth's atmosphere in our time?
The present atmosphere of the earth is constituted mostly of molecular nitrogen (N2) and molecular oxygen (O2). Nitrogen is the most abundant gas, approximately 80% of the total volume. Oxygen makes up about 20%. Other gases exist in the atmosphere in a low percentage. (Of great concern is the enhancing in the amount of carbon dioxide because of human activity, the cause of the threatening global warming.)
A study is made to verify the effects of pesticide exposure on pupal weight of butterflies. In a pilot study, 5 randomly selected larvae are raised on plants exposed to the pestici
Illustrate about the Chemical disinfection Sharp waste may cause injury and person may have diseases like Hepatitis B, Cand HIV/AIDS. Therefore it is important for to understa
Determine the types of Cell Based OII the degree of complexity of the cell organisation, two types of cells, namely, prokaryotes and eukaryotes, are recognised. The prokaryotic
Define role of Zinc in controlling Gene Expression? Zinc atoms have specific structural roles in enzyme molecules, as well as, in many other proteins and in bio membranes. Thes
Mesophytes These plants grow in moist habitats and well-aerated soils. They prefer soil and air of moderate humidity but fail to swive in areas with water-logged soils or oveta
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Collenchyma are one of the three major cell types in the plants; are elongated and have thicker walls than parenchyma cells and are usually arranged in strands; gives support and
How is excretion done in fishes? Fishes have a pair of kidneys that filtrate the blood. Bony fishes excrete nitrogen as ammonia, NH 3 , (they are ammoniotelic) and cartilagino
What are five fin fish found in the North-East United States?
What is the significance of magnesium for plants? What are the other main biological functions of magnesium? Magnesium is fundamentally significant for plants because it is par
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