Answer:
animals who eat the bark can spread it.
Explanation:
logic
<span>The Answer is D. Maintaining Structure</span>
<span>main function of the circulatory system in multicellular organisms is to circulate blood and oxygen in our body .so the right option is
</span><span>A) to bring oxygen into the lung
</span>hope this helps
Animals obtain nitrogen by eating plants which has absorbed nitrogen from the soil.
