Answer: The main organ of the integumentary system is the skin.
Explanation: The skin regulates body temperature, keeps germs from entering your body, and produces vitamin D to help absorb calcium.
Answer: The correct answer for the fill in the blank is B) Advantageous traits become more common in a population.
Theory of natural selection was given by Darwin. This is one of the mechanisms of evolution.
According to this theory, organisms that are better adapted to their environmental conditions survive and increase their population by reproduction. So they pass the advantageous trait to the next generation. In other words, it reflects the survival of the fittest.
Due to this, the advantageous trait becomes more common in the population.
Thus, the correct option is B)
A stamen is the name for male reproductive parts of the flower which consists of an <u>Anther and Filament</u>.
Answer: Orbit
Explanation: The Earth’s axis being in orbit means that the Earth is in different positions around the sun at different points in time, causing day and night.