Answer:
how scratching an itch is an example of a negative feedback mechanism. ... A receptor carries the information about the stimulus (itch) to the brain via an afferent pathway. Control center (brain) analyzes this information an turns on an effector which will cancel the stimulus.
Question Two: Genetic variation. As healthy as someone might be, genetic variation is required to balance the differences out. This is to prevent possible diseases that aren’t present but may be if it becomes dominant.
Question Three: Variation is a good thing for species because it allows multiple possibilities for an organism, allowing a higher chance of survival. The higher the diversity, the more likely it is for people to not die from the same genetic diseases. Similarly, in a classroom, diversity can allow people to have different ideas, opinions, and answers. This lets other learn from one another within the environment rather than just wasting time listening to something that one knows already.
Answer:
What types of gases were found in the primordial earth?
It consist of different gases such as ammonia, methane, hydrogen and helium
Explanation:
