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Enumerate in brief about the Earthworms
There are several species of earthworms, having slender cylindrical bodies with varying diameters. These organisms ingest the dead organic tissues in soil along with the soil material. The mineral soil is digested, and excreted as granular soil aggregates richer in bacteria and mineral nutrients. These organisms only transform the food so as to be more beneficial for the higher plants and are more abundant in soils which are moist, have high organic matter and undecomposed plant residues. They are more common in fine textured neutral soils with high reserves of lime than in the coarse sandy soils.
To study a hailstone When it hails, collect some of the hailstones. Cut them in half and view how the ice of the hailstone has been built up in layers. If you live in a region
Another aneroid barometer Stretch a piece of thin rubber in excess of the mouth of a small glass jar. Wind thread or string over the rubber to secure it and then put a ring of
Acid Rain: A side effect of air pollution is acid rain, which is now of common occurrence. You might have seen, that some industries build very tall smoke stacks to protect t
Define age related changes in Excretory System There is a progressive decrease in the number and size of nephrons fiasic unit of the kidney). There is a 10% decrease in renal p
Flammable Solids : Flammable solids are substances which are flammable or liable to spontaneous combustion or emit flammable gases on contact with water. Examples are: camphor, ci
What is an ionic bond? By definition, an ionic bond is a chemical bond that forms between two or more oppositely charged ions. The animation above shows an ionic bond between a
do you have a protocol propogating HSV-2 in a VERO cells
How the lungs work Cut the bottom off a large bottle. Fit a cork to the neck with a Y tube in it. On every of the lower limbs of the Y tie a rubber balloon or a number of small
What do all optical instruments and devices have in common?
What is the difference among a semi-precious and a precious stone? The difference among precious and semi-precious comes down purely to human definitions that have been compuls
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