I believe it's D don't take my word for it.
The renal<span> artery carries blood into the </span>kidneys, which once there is filtered by nephrons. The waste filtered by these nephrons is combined with water to makeurine<span>. As the </span>urine is produced<span> it drains out of a tube called the ureter and collects in the bladder
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The relationship between the fungus and algae of a lichen is known as a symbiotic relationship.
In this kind of relationship, the two organisms work together to create one stable unit.
LOWER is the answer
I hope this help