In very early attempts to classify organisms, the Greek philosopher, Aristotle, identified all animals as “air dwellers, land dwellers, or water dwellers”. Under this system, all of the following organisms would have been placed in the same group: Bat, grasshopper, eagle, butterfly, flying squirrel, and sparrow. In the space below, construct a dichotomous key that can be used to identify these 6 animals.

depends where

on my head

yes

on my legs

yes

on my

arms

yesh

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.