 In previous assignments, you have thought about
the concept that there are changing communities of organisms
represented
in the geological strata of the Earth. Referring back to Steno's
Laws
and the activity on geological time, the remains of organisms are
deposited
in the forming strata of the Earth. Over time, this layer of
earth
is covered by a newer layer. The deposited remains of the
organisms
are then effectively sequenced in order of age with the oldest
organisms
or communities being present in the bottom layer of rock. Looking
through
the communities in these layers of rock shows that the organisms
comprising
communities change over time; however, these rock layers and included
organismal
remains do not directly tell us why the organisms changed as time
passed.
In the following activity, you will
conduct
research on three questions in an effort to better understand the
changing
of living things over time. Your Instructor will divide the class into three smaller groups. Once the groups have been established each group will be given one of the following three questions to answer: As a group, use the internet and any other available
resources to investigate solutions to your question. After you
have
been given adequate time to research your question, your Instructor
will
lead a discussion in which each group will present its findings to the
class.
Be prepared to give an effective explanation, complete with several
examples,
of your question. |
