Grasses → mice → cat → coyote a natural disaster of a fire has occurred what could happen to this food chain? a: the grasses will be gone and all of the consumers will be able to leave. b: the grasses will be gone and some of the mice will die but the number of cats and coyotes will remain the same. c: the grasses will be gone but the number of consumers will all stay the same. d: the grasses will be gone and any surviving consumers will have to look for new resources in that environment. nothing will happen to this food chain.

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.

Monomers are the building blocks of larger molecules, called polymers. for example, proteins are composed of chains of amino acids that are linked together. cellulose is a polymer that makes up plant cell walls. cellulose is made from a chain of c6h10o5 molecules. which monomers are most likely used to produce cellulose? why?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above