Cyclical means occurring in cycles technically meaning reoccurring.
Answer: I believe the correct answer for this would be mutation. It has a change on DNA, but can not have ANY effect upon the phenotype.
Polar bears are listed in red as they are belong to Endangered Species. These species are gonna extincting due to gradual changes by environmental factors.
Translocation has taken place, you can tell by the rearrangement of nonhomologous chromosomes.
Answer:
gravity
Explanation:
gravity is the reason why regular things can't float, why we land when we jump, and why we can't fly.
gravity pulls us towards the ground, towards the center of the earth (inner core)
