Answer:
1 is so that you could hear better. 2 is so that it is not wrong and one opinion may be different from everyone elses.
Explanation:
Red blood cells pick up oxygen in the lungs. Blood travels away from the heart and lungs through the arteries. Red blood cells drop off oxygen to the cells through tiny tubes called capillaries. Blood then returns to the heart through the veins and the cycle begins again.
Warmth – the 'danger zone' temperatures at which bacteria grow best are between 5ºC and 63ºC. Food – like any other living things, germs need food to grow. High-risk foods that bacteria love best include dairy products, meat, poultry, fish and shellfish. Water – bacteria need moisture to grow.
It helps you move your joints like your elbows, knees, wrists, and ankles
