Which is an example of species diversity? A. Variation in a flock of pigeons
B. Fire ant colony
C. Giraffes, earth worms, algae
D. A savanna and a tropical rain forest

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

What sort of waves exhibit the doppler effect?