There is a 3/4 chance their offspring will be black. If you make a Punnett's (I hope that's how you spell it) square then you will find that one offspring will be homozygous for black hair, two will be heterozygous with black hair, and one will be homozygous with brown hair. Therefore, there's a 3/4 chance the offspring will have black hair. Hope this helped!
The surface area to the volume ratio gets smaller as the cell gets larger. If the cell grows beyond a certain limit not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.
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Answer:
When it is cold higher up, the water molecules in water vapor come together; the water vapor becomes liquid water, which then falls as rain When the air gets to East Ferris, there is not enough water left in it to fall as rain. East Ferris people use too much water and do not recycle.