Explanation:
Primary succession occurs when a habitat that has completely destroyed reheals from complete scratch
On the other hand, secondary succession occurs when only a portion of the original ecosystem survives and is rebuilt from that
Answer:
Warm air is cooling quickly.
Explanation:
Hot air rises and cool air sinks.
The answer is, 43 km/hr . Speed is,

So we will divide the given distance to the given time, so :
Nervous system regulates our body in many aspects:
1) Thinking, storing information
2) Regulation of vomitting, swallowing,
3) Moderate other physiological functions of the body
Hope this helps!