The most common way that modern ships transplant non-native species to new environments is by O allowing ship mascots to escape.
O loading and discharging ballast water.
O deliberately sabotaging the local environment.
O none of the above

Which of these internal feedback reactions does not need your brain? oa. your leg jumping when it is hit by a reflex hammer b. your deeper breathing when you need more oxygen c. your body temperature rising when you have an infection d. your heart beating faster when you are in danger