The male Emperor penguin must incubate the female egg for more than 2 months at temperatures around -40 degees C (-40 degees F) during winter darkness in the Antarctic.
Weight of numbers
Weight of numbers The success of a group of organisms is usually
determined by counting the number of different species within the
group. However, a new method of calculating the abundance of
species within a group by using the mass (weight) of organisms,
rather than counting their numbers, has revealed new information.
Scientists counted the weights of small invertebrates called
bryozoans and found that one species within the group accounted for
most of the group's weight. This means that counting the weights of
species can give more insight into their rise and fall over long
periods of time. 15 AUGUST 1998, P. 7
Cool Articles
