The cell cycle is controlled by many cell cycle control factors, namely cyclins, cyclin-dependent kinases (Cdks) and cyclin-dependent kinase inhibitors (CKIs). Cyclins and Cdks, which are positive regulators of the cell cycle, activate cell cycle factors that are essential for the start of the next cell cycle phase.
Answer:
D
Explanation:
D is the only option where the cause of the pollution is not something man-made.
Answer:
Cerebellum
Explanation:
The cerebellum, in the back of the brain, controls balance, coordination and fine muscle control (e.g., walking).
