What allows people to see objects?

radio waves

glass

X-rays

light

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

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