Animals shrinking in the heat
to need less body fat to survive while others are struggling for food.
In the next few decades, some types of mammals, fish, birds and plants are getting smaller
and evolve into miniature versions of what they are today.
This could force some creatures, that people eat, to become extinct,
Dr David Bickford from the National University of Singapore reviewed research showing
creatures from deer to tortoises, gulls, goshawks and even polar bears have already shrunk
over the past 50 years.
'Because recent climate change may be faster than past historical changes in climate, many
organisms may not respond or adapt quickly enough. The species that can adapt are the
species that will be affected by potential declines in body size.'
Researches say warmer and drier conditions have seen an increase in droughts which have
shrunk some plants, and acidification of the ocean has affected the size of algae and plankton
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