Porcupines have long sharp hairs called quills. What is the main function of the quills on the porcupine?

Which of the following statements are true chromosomes make up genes

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

Ais a group of individuals of the same that exist together in the same place at the same time