<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>
Answer: As matter cycles and energy flows through living systems and between living systems and the physical environment, matter and energy are conserved in each change. The carbon cycle provides an example of matter cycling and energy flow in ecosystems.
Explanation:
Wild boars were brought to the United States by humans.Wild boars have quickly spread through the United States.Wild boars have established successfully in areas with warm climates.<span>Wild boars have a high reproductive rate and no natural predators. the answer is (c)
</span>
Answer:
Explanation: Ctenophores move in water, they have a flapping motion.
hope this helps :)
carbon dioxide Coronavirus
