A farmer is analyzing cross sections of his land to determine where to build a well.
Which phrase describes the best area to dig down to the groundwater?
O where the saturated zone is 15 meters deep
O where the water table is at 100 meters deep
where the unsaturated zone is 50 meters thick
O
where there is a 25-meter thick clay layer at the surface

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.

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus

Describe how viruses and bacteria can be used as biological weapons. what are some of the potential threats and potential benefits? do you agree with the use of viruses and bacteria as biological weapons? why or why not?