Did you know that there are a group of frogs in South America known as 'poison-dart frogs'? There are different types of frogs within the group but most of them are brightly coloured and have black spots. They are dangerous to touch because they have poison on their skin. Native people in the area used to rub the poison onto their arrows before hunting.
Freshwater fisheries may disappear
Freshwater fisheries may disappear A researcher at the University of Alberta predicts
that factors such as climate warming, pollution and overfishing
could destroy Canada's freshwater fisheries within 50 years unless
measures are taken. Speaking at a conference on freshwater issues,
David Schindler said that increasing temperatures will cause
wetlands to disappear, disrupt fish migrations and promote the
invasion of non- native species to Canada's waterways. 17 MAY 2000
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