Duplicate. with attachment
the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation. what must be true about the mother?
a. she is color-blind.
b. she has two recessive color blindness alleles.
c. she has at least one recessive color blindness allele.
d. she only has one x chromosome.

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation: