Answer: around December 21 in the Northern Hemisphere, which means January is usually the coldest month.
Summer solstice is on or around June 21 in the Southern Hemisphere, which means that July is usually the warmest month.
Less children are being born due to increased efforts to lower the CBR (crude birth rate) and improve contraceptive methods. This results in less children being born, meaning that the older people are increasing in dependency (because there's more older people in the older generations vs the newer)
When the arch collapses, it leaves the headland on one side and a stack (a tall column of rock) on the other.
The stack will be attacked at the base in the same way that a wave-cut notch is formed. This weakens the structure and it will eventually collapse to form a stump.
hope this heLps