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A home-made wormery
A wooden box 30 cm by 30 cm by 15 cm fitted with a glass front is beneficial for studying the habits of earth-worms.
Fill the box nearly to the top with layers of (a) sand; (b) leaf mould; and (c) loam, padding down every layer before adding the next.
Place lettuce leaves, dead leaves, carrot, etc. on the surface soil, together with few worms.
Keep the contents damp and examine the behaviour of the worms.
The major air pollutants are: (i) Carbon monoxide, CO (ii) Nitrogen oxides, (NO)x (iii) Sulphur oxide, (SO)x (iv) Ground level ozone (O3) (v) Hydrocarbons (
Wetlands and estuaries are transitional biomes. Land that remains flooded either part of the year or permanently with fresh or salt water is known as wetland. The internationally a
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What volume of 4x protein sample buffer do you need to add to 15 ml of a cell extract in order to load it on a gel?
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phylum protozoa
1. The genes for ruby eyes (rb), tan body (t) and cut wings (ct) are all found on the X-chromosome of Drosophila melanogaster. All of these are recessive traits. They map in the or
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