<u>Pressure increases with depth </u>
Explanation:
Pressure increases with depth because the molecules at the deeper end are compressed by the weight of the above column of the fluid. Compression means there are more molecules of the fluid per volume in the deepest place than the surface. More molecules mean more pressure.
This is why divers need special gear when diving deep in the ocean to protect themselves form increased water pressure. In addition, the lowest atmospheric layers have the highest pressure because they are more dense and bear the weight of the above air column. This is why air pressure is a bit lower up the summit of a mountain than at its base.
For example, carbon has six protons and is atomic number 6. Carbon occurs naturally in three isotopes: carbon 12, which has 6 neutrons (plus 6 protons equals 12), carbon 13, which has 7 neutrons, and carbon 14, which has 8 neutrons. All three have six protons, but their neutron numbers - 6, 7, and 8, respectively - all differ. This means that all three isotopes have different atomic masses (carbon-14 being the heaviest), but share the same atomic number (Z=6).
ANSWER : Carbon 14 (hope this helps!)
This one was shown in the documentary, Cosmos, a good example of selective breeding is with wolves into dogs, only breeding the ones that dont bite the feeding hand and what are the nicest. an example of natural selection is brown bears in the artic, thier offspring needs to adapt to the climate and how they survive, polar bears are white because its harder for prey to see them in the snow
I would say tested anything scientific comes w a hypothesis and gets tested.
