Convection currents in magma drive plate tectonics. The answer is true.
Where are the bloodstain patterns?
I believe blood vessels constrict
There are many reasons to why slaves were essential in the colonial economy:
Slaves were generally used more in the south, because large plantations were found there, which meant that the need for large amounts of workers.
Slaves provided cheap labors, and as they were not "citizens" of the US, they were not allowed their rights.
Slaves were also relatively easy to buy and replace, however, their survival rates were not that good after they traveled long distance.
etc.
hope this helps
In order to reproduce, female sex cells must be fertilized by A. Sperm.