BRAIN MAY GROW NEW CELLS DAILY. This zone was recently identified by other scientists as the home of the brain's stem cells, the source cells from which an organ is replenished. The new neurons migrated toward the cortex, matured and sent out axons to make connections with other brain cells, the Princeton biologists found.
Answer:
The correct answer would be b. triggered by changes in the weather.
Hibernation is a state of inactivity and lower metabolism generally observed in endotherms.
This state is characterized by slow breathing, slow heart rate, low body temperature, and low metabolic rate.
It helps most of the endotherms to survive through the cold seasons.
For example, beer hibernate in winters.
Thus, weather change can trigger hibernation.
<span>D) The swallowtail will develop a stronger resistance to the oils in the rue.</span>