81.   Depletion of the ozone layer could cause a decline in human immune responses, according to a new report by the UN Environment Programme.

82.   The crisis occurs against a background of rapid declines in cod stocks in European waters.

83.   Fisheries are being depleted rapidly, with three important species -- pilchard, hake and kingklip -- suffering severe decline in recent years.

84.   The first survey of both private and state-owned forests confirms the apparently-inexorable decline in the red squirrel population.

85.   Increased use of chemical pesticides is causing a steep decline in the numbers of song thrushes in Britain, according to a survey by the British Trust for Ornithology.

86.   A survey of beaches in the UK has found an alarming decline in coastal cleanliness.

87.   The decline in British hedgerows may be slowing for the first time this century, thanks to schemes to subsidise hedge planting.

88.   There were smaller declines in the numbers of two other waders, the Lapwing and Redshank.

89.   The measures are designed to halt the sharp decline in shark populations caused by overfishing in recent years.

90.   The suggestion of a decline in amount used may be misleading, however, without further information on the toxicity or biological activity of the pesticides used.