1,ooo years
The sand dollar larvae are tiny organisms, which are not like mature sand dollars. The larvae to develpo the round test and look like small sand dollars take about six weeks, then in few months they grow to the maximum size. The sand dollars can live from 9-13 years of age. Average age is 10 years.
ho long dose it take a humien to sink in quick sand
Naturally that depends on how fast you count. If you count one dollar bill every second, then it would take you 5,000 seconds, which is 1 hour 23 minutes 20seconds.
a long, long time
500 years
about 10 years
a million years
I didn't think that pumkins grew in sand but if they do thats cool :}
if it is wet take out the wet sand you can sift and reuse sand but 5 times max
about two to three months.
A couple minutes
It takes millions to billions of years for diamonds to naturally transform into graphite.