Final answer:
Animals utilize defense mechanisms like mechanical protection, chemical defenses, and behavioral strategies, to avoid predation. The octopus uses ink and camouflage, butterfly fish blend into coral reefs, scorpions combine a hard exoskeleton with venom, and turtles are protected by a hard shell.
Step-by-step explanation:
Defense mechanisms:
Animals deploy various defense mechanisms to protect themselves from predators, ranging from mechanical and chemical defenses to behavioral strategies such as mimicry and camouflage. Here's how the given animals defend themselves: The octopus can release a cloud of ink to obscure a predator's view, allowing it to escape. Additionally, octopuses can change the color and texture of their skin to blend in with their surroundings, an excellent example of camouflage.
Butterfly fish use coloration and patterns on their bodies to blend in with the coral reefs they inhabit, which is a form of mimicry and camouflage that confuses predators. Scorpions have a mechanical defense with their hard exoskeleton, which is difficult for predators to penetrate. They also employ a chemical defense with venom in their stinger, which they use to deter or incapacitate threats.