<h2>Answer and Explanation </h2>
Predators and prey play important role in an ecosystem because if we remove predators from the food chain, prey population explodes. If we remove prey from the food chain then predators will die due to lack of food. They both are important for each other. If anyone of them is removed then the whole ecosystem will be destroyed. This will distrube the entire nature which is running in a cycle.
Answer:
Explanation:
Because they appeared quickly in geological time, and moulted like other arthropods, trilobites serve as excellent index fossils, enabling geologists to date the age of the rocks in which they are found. They were among the first fossils to attract widespread attention, and new species are being discovered every year.
