Answer:
Mutations, gene flow, and sexual reproduction are all major causes of variation. By altering the genes of individuals in a population, DNA mutation causes genetic variation. As new individuals with different gene combinations migrate into a population, they cause genetic variation.
Explanation:
B)
Maybe post the picture to your problem if you need help
Answer:
(See explanation below for further details)
Explanation:
(This exercise is written in Spanish and for that reason explanation will be held in that language)
La diferencia fundamental entre una sociedad que usa el dinero para intercambio y una que usa trueque es que la primera ofrece la posibilidad de un indicador universal que permita la compraventa de bienes y servicios, creando las bases de una economía de mercado que trascienda entornos locales.
The answer is - The plateau is higher than the coastal plain.
The plateaus are highlands, on occasions higher than some mountains. They are predominantly flat or wavy, so they look like big plains on higher altitude.
The coastal plains on the other side, are very low, close in height as the sea level itself, which actually makes them the second lowest plains after the depressions, so they are much lower than the average plateau.