This question seems like its too easy so i might have got it wrong.. but would't you just subtract 20 and 10 from 800 to get 770?
Terrestrial or inner planets like Mars and Venus were formed near the Sun where the solar system's temperatures were very high.
Biologists look through microscopes to better understand cells. They may use this to look for diseases or mutations with in a cell.
The large vacuole stores water and other materials for a plant cell
Answer:
The correct answer is - A. Producing offspring that are genetically identical to the parents
Explanation:
Genetic variation is the difference between the population or individual on a genetic level. If there is a change in the DNA of individuals or among the population, it is genetic variation in these organisms.
There are several factors that result in genetic variation such as random mating, random fertilization, mutation, crossing over during meiosis, and many more. Producing genetically identical offspring to the parents is not a factor as there is no variation is taken place on the genetic level.