Which of the following best describes the excretory system of a flatworm for liquid waste? nonexistent unicellular simple tube highly branched

Highly branched

Explanation:

I took the k12 quiz. View the image below to confirm my statement

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.