You row a boat perpendicular to the shore of a river that flows at 3m/s. The velocity of your boat is 4m/s relative to the water. What is your velocity relative to the shore?

coal is not sustainable because it will one day run out.

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.

yes, because even though a theory has a  lot of evidence to support it, it is not always true