The scientific metho
sources
guided practice
biology
in this session, you learned about the scientific method.
what is the first step in the scientific method?
a. observation
b. experiment
to biology
c. hypothesis
method
d. question
ientific method

rain is the best answer

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.