Amachine a-makes work easier to do b- changes the size of force needed c-can change the direction or distance of the force d- all of the above

In complete sentences describe the energy flow between the sun, the earth, and space.

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

Diabetes is often suspected when glucose shows up in urine tests. use the model to explain how glucose could be present in urine. why do you think this symptom is especially concerning for young people?