After running, Ollie’s blood pressure was high. His nervous system sensed this and sent a message to decrease heart rate and blood flow. Which system worked together with the nervous system?

skeletal system
circulatory system
respiratory system
digestive system

Disinfection of impression materials is usually accomplished by a. sterilization with high heat. b. spray or immersion in a chemical disinfectant. c. sterilization with steam under pressure. d. allowing the impression to sit 24 hours in water until all the organisms die.

What is the best-known carbohydrate?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?