It's the first one is the answer
Roundworms or nematodes<span> constitute the phylum Nematoda. They are a diverse </span>animal phylum inhabiting a broad range of environments. The most essential representative for this group is the <span>Bursaphelenchus xylophilus. Hope this answers your question. Have a great day!</span>
C. A higher amount of addictive chemicals are needed to get the same high when fewer receptors are present...
Air rises when it is warmer