Owing to the changes in the gravitational forces applied by the celestial bodies, the Earth's orbit tends to change slightly and become a little more elliptical than usual every '100,000 years'.
This change in the orbit causes the Earth to move closer to the Sun and as a result, the climate on Earth gets warmed up owing to the increased proximity to the Sun.
Thus, this cycle exhibits substantial changes in the overall environment of the Earth every '100,000 years'.
Well to find this out you need to make an equation
s+7=j So for example if Johnny's sister is 15 then Johnny would be 22 because s(sister's age) +7(number of years difference between their ages)=22(Johnny's age)
<h3><em>Natural resources have a double-edge effect on economic growth, in that the intensity of its use raises output, but increases its depletion rate. Natural resource is a key input in the production process that stimulates economic growth.</em></h3>
