Sunflowers turn their big yellowish flower heads slowly to face the sun throughout the day.
More is less
More is less Some groups of animals, both in the wild and in
captivity, may face extinction due to inbreeding. New research
indicates that introducing new animals into populations of rare
species may harm the diversity of their genes rather than increase
it. If the new animals do not have DNA that is different enough
from animals already present, the genetic diversity of the
population may decrease and malformed or unhealthy offspring may be
born. 20 NOVEMBER 1999, P. 6
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