2 Which of the following is an example of a trace fossil?
А
A skeleton preserved in a tar pit
B.
A footprint of an extinct animal
С
A mummy buried in ice
D
An insect preserved in amber

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Which statement best describes the flow of energy in this scenario

Draw any one of the skeletal structures of a 2° alkyl bromide having the molecular formula of c6h13br and two stereogenic centers. indicate chirality by using wedge and hashed wedge notation. lone pairs do not need to be shown.