England had one allele for hemophilia. in Hemophilia is an X-linked recessive condition in which blood does not clot properly. Queen Victoria of
Most of her male descendants had the disorder, but few females had it. Why did hemophilia occur more frequently in Queen Victoria's male
descendants?

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

d. planting trees

the trees take in carbon to make oxygen.

which fault and or fold did you find most difficult to diagram

the answer is d. none of the above