Consumers are usually animals. Consumers cannot make their own food, so they have to eat other organisms. They can be classified into three main groups. These groups are herbivores, carnivores and omnivores.
Answer:
the ratio of the surface area to the volume is 1:2
<span>The question says,' the purpose of the mucus found within the respiratory system is to .............. The correct option is B. The mucus found in the respiratory system function by trapping foreign particles that enter into the lungs especially thorugh the nose during breathing, thus mucus aid in protecting the lungs.</span>
I believe it is the crust
