That would be the kidneys.No kidneys= no urinary tract. Hope this helps!

Diffusion refers to the random motion of particles from a medium of higher concentration to a medium of lower concentration.
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Answer:
Explanation: The sugar and phosphate group make up the backbone of the DNA double helix, while the bases are located in the middle. A chemical bond between the phosphate group of one nucleotide and the sugar of a neighboring nucleotide holds the backbone together.
Answer: The Chesapeake Bay is the largest estuary in the United States. The bay provides vitally important habitats for wildlife, lots of recreational opportunities for people, and is an important fishery upon which both people and wildlife depend.
Answer:
endocytosis
Explanation:
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