A student tied a potato cube to a plastic rod and suspended it in solution X. After two hours, the plastic rod is bent slightly as shown in Fig. 1.1.
original position
of plastic rod
final position of
plastic rod
thread
beaker
potato cube
solution X
Fig. 1.1
(a) (0)
Explain the final position of the plastic rod after two hours.

The species that are unable to adapt to environmental changes become extinct. This reduces biodiversity.

Species that are too closely interbreed can go extinct as mistakes in the DNA accumulate in the population. All forms of extinction cause reductions in the remaining biodiversity