Answer:
Nitrification.
Explanation:
It is a part of the Nitrogen Cycle. The bacterias can convert ammonia into nitrite and nitrate, these compounds are fundamentally important for all life. They are used for the creation of proteins and amino acids.
I hope this answer helps you.
Answer:
skin it protects from germs
The fossil record is important for evolution because they show that life from the past is different from life today. Scientists, such as paleontologists can determine the age of fossils by using technology provided today; known as radiometric dating, to sort them and determine relationships with organisms today. It allows us to get a whole view on the possible relations of today.
Homologous Anatomical Structures provide such a big support to the thought of evolution as well. They are structures that are similar in some organisms because they were inherited from a common ancestor. The functions may or may not have been used by the past ancestors, either. This supports evolution widely due to us seeing what we've evolved from, and what animals have evolved from. It allows us to determine ancestors as well.
Embryology is a very good one, looking at the early stages of animal development. This allows scientists learn about how different species have evolved over time. It supports evolution largely due to this. A very good branch of science, spreading the thought of evolution each and everyday.
Apologies- I don't have an answer for the other explanations.
For the first one, electrons travel around the nucleus in fixed energy levels with varying energies.
Second one, protons, neutrons, and electrons have a mass, but electrons have far less mass
Third one, cations and protons
Fourth, not sure.
