Parts of some plants and animals grow according to the Fibonacci sequence of numbers, developed by an Italian mathematician, in which each number is the sum of the previous two numbers. The shell of the chambered nautilus, the seeds in a sunflower, and pineapples all exhibit a structure called the "Fibonacci spiral". Look at the pictures. Which crosscutting concept of biology do these phenomena BEST represent?

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.

Study this image which statement best describes the rock shown check all that apply

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.