Several fish species became extinct millions of years ago. The graphs
provided below show the distribution of fossils of these fishes as they
occur in several undisturbed layers of sedimentary rock observable in a
cliff face. Respond to ALL 4 PARTS below: Explain why the distribution of
the fossils in figure 1 support the hypothesis that the extinction of these
species was a result of a sudden environmental change. Describe an
environmental change that could have produced this kind of fossil
distribution. Explain why the distribution of the fossils in figure 2 supports
the hypothesis that the extinction of these species was a result of a
gradual environmental change. Describe an environmental change that
could produce this kind of fossil distribution.

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation:

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude , so she gains some gravitational potential energy.