Which of the following is a characteristic of a hypothesis?


What is the main purpose of the scientific method?


What is the primary function of the endocrine system?


Which of the following is a characteristic of a gas?


What is the primary purpose of chloroplasts in plant cells?


Which of the following is a non-renewable resource?


What is the primary role of the ozone layer?


Which of the following is a characteristic of a liquid?


What is the primary component of the cell membrane?


What is the primary function of the integumentary system?