Humans are blessed with five sensory organs such as eyes, ears, nose, tongue and skin which are influenced by the change in the environment.
Sensation refers to sensing the outer environment with the help of the sensory organs in the form of touch, smell, sound, taste and sight. According to the environmental conditions, the sensory organs act and send the message to the brain which is then interpreted. For example, change in the environmental temperature such as hot or cold is sensed by the skin and interpreted by the brain.
When gene frequencies stay relatively constant, Hardy-Weinberg equilibrium occurs. HW equilibrium occurs in large populations with random mating, with no migration, mutation, or natural selection. In this case, the proportion of dominant homozygous equals the square of the frequency of the dominant allele (p2), the proportion of recessive homozygous equals the square of the frequency of the recessive allele (q2<span>) and the proportion of heterozygotes equals 2pq.</span>
I would have to say Auroras. they occur when the suns particles get charged by the earths atmosphere