please help: Feedback loops help maintain internal conditions while external conditions may be changing. What is this process known as?

Eutrophication caused by human nutrient pollution.

11. a nursing assistant works in a home healthcare setting with a patient. during a procedure, a blood spill occurs. the nursing assistant put on her ppe and gets some paper towels. she removes the visible blood by blotting it up with the paper towels. next, she should place the paper towels in the trash. wash her hands using proper technique get a disposable mop. place the paper towels in a biohazard bag

Name another animal that can be grouped in group s and t(i)group (i)group group s is sharp thorns (except puffer fish and porcupine)group t is poisonous sting (except snake and scorpion )*can u me with this question* pl