Please answer the following question: Fact 1: Most invertebrates have a more complex nervous system. Fact 2: Invertebrates are animals without a backbone. Given the two facts above, answer the question "what have more complex nervous systems" with the following options: - animals without a backbone - the wearing away of rock - h2o - barks and snarls - plants - density - Veins and arteries. - remains of prehistoric life
Answer:
animals without a backbone