James has damage to his left ventricle of the heart and as a result of this damage doctors are going to have to perform surgery and cut into his heart to fix the deformity. explain to james what layers of the serous membrane the doctors will have to cut through in order to reach his heart by starting with the most superficial layers working to the deepest areas.

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

The response is the basis for vaccination. primary secondary tertiary none of the above

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above