Explanation:
ionic n vanderwaal both are interactions resulting in compounds/molecules
and the difference is the strength of them..ionic is stronger than the vanderwaals
Formation of the Earth's Atmosphere. The early Earth was very different from our Earth today. The early Earth experienced frequent impacts from asteroids and meteorites and had much more frequent volcanic eruptions. There was no life on Earth for the first billion years because the atmosphere was not suitable for life.
Answer:
The natural selection on polygenic traits affects selection.
Explanation:
The natural selection process allows changes in frequencies of alleles in a character that is determined by single gene. The polygenic characteristics are disproportionately affected by natural selection as natural selection affect the phenotype distribution.
This occurs in three ways that are disruptive selection, stabilizing and directional selection.
They have to have a higher density than water to have the ability to stay on the sea floor. Otherwise they would just float to the surface of the water
