The arm or forelimb of humans, horses, goats, and mice all exhibit the same three bone structures: humerus, ulna, and radius. which statement best explains this common skeletal structure?
a)the limb bones are similar across these species because they share a common ancestor.
b)the limb bones are the same across these species because all of them move in a similar way.
c)the limbs are similar because of the recurring patterns of genetic mutation that are common in the animal kingdom.
d)the limbs are structurally similar due to convergent evolution--different organisms evolving to become structurally similar.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Which statement best describes a typical difference that could be found between the "analysis" and "conclusion" sections of a lab report? a) only the "conclusion" describes errors that occurred during the experiment, and only the "analysis" section suggests further research.b) only the "analysis" section includes specific data comparisons, and only the "conclusion" section suggests further research.c) only the "analysis" section discusses whether the original hypothesis was supported, and both sections include graphs of data.d) only the "conclusion section discusses whether the original hypothesis was supported, and both sections suggest further research.(the answer is b i just took the test)

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down