For instance, spiders, lobsters and millipedes are arthropods ... These types of eyes, though not great for clarity, are excellent at detecting movement. What is a species? All insects descend from a ...

For instance, spiders, lobsters and millipedes are ... are excellent at detecting movement. What is a species? All insects descend from a common ancestor that lived about about 480 million years ...

For instance, spiders, lobsters and millipedes are arthropods ... Quadrillions of ants Counting the exact number of insect species is probably impossible. Every year, some species go extinct ...