A porcupine has quills on its back which help protect it from predstors. An opposdum will pretend to be dead and become stiff when threatened. Which statement is true about these adaptations?

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

Name the two stages involved in protein synthesis and explain what occurs in each of the two stages. be sure to also indicate where each process takes place. plz don't give one sentence answers : d

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots