5000 years ago the weight of wheat is 250gms ...

Oh my God it's amazing...one seed of a wheat is 250gms. Is this truth or not...?
Yes it is....go back into 5000 years back... during the mahabharta's history...the size of man is 12 feet and a women is 9 feet taller ... that's why all things are also bigger. This is because of Earth's ozone layer... it was in good position and uv doesn't effect...coz of less pollution there is less humidity...