During a presentation about evolution a student claims that modern giraffes inherited their long necks from ancestral giraffes that stretched their necks to reach for leaves on tall trees.

choose the sentence that best describes the claim.

a.) stretching the neck causes gene mutations that can result in an even longer neck. these genes are then passed on to the giraffe's offspring.
b.) stretching the neck enabled giraffes to reach higher, which gives them an advantage to survive, reproduce, and pass on this trait.
c.) ancestral giraffes had longer necks than modern giraffes, so the claim is not supported by research.

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

This map shows how climate change might affect precipitation patterns in the great plains of the united states by the end of this century. brown shoes a decrease in percipitation, and blue shows an increase. the maps differ based on the predictive levels of green house emissions. the maps shows that northern area should get a. more pracipations regardless of emmissions b. less pracipation, regardless of emmissions levels c. more precipitation, but only when emission levels.southern areas show a. more pracipations regardless of emmissions b. less pracipation, regardless of emmissions levels c. more precipitation, but only when emission levels.to use these maps to prepare for natural disasters in the great plains, scientist need to ask? a. how many tons of emissions were used at the basis of the map.b. which types of fossil fuels are used in the great plains c. if you think the above is wrong it's probly c the question is cut off

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic