In humans, which structure prevents food from entering the trachea?

Looking at this image, what relationship can be drawn from it? the lower the degree of latitude, the lower the degree of temperature there is no relationship between latitude and temperature the higher the degree of latitude, the higher the degree of temperature the lower the degree of latitude, the higher the degree of temperature

What are some characteristics of a free enterprise economy?

Someone me with this: a mineral' is determined by its actomic structure.