When ice covers lakes, there is less oxygen to breathe, and most fish sink to the bottom. They remain very quiet but awake. Carp, however, flap their tails to cover themselves with mud and they go to sleep. When the lake ice melts and the oxygen levels rise they awaken.
Heat your greens
Heat your greens The British nuclear industry is conducting
experiments to determine whether plants' ability to absorb
nutrients from the soil could also help them to absorb
radioactivity from the soil. Dwarf sunflowers, spinach, sugar beet
and Indian mustard are being grown on contaminated soil. If this
experiment goes as planned, plants could be used in the future to
help to decontaminate radioactively contaminated soil. 15 AUGUST 1998, P. 21
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