A coral reef is made of thin layers of calcium carbonate. Coral polyps form a living mat over a calcium carbonate skeleton. Stony corals (or scleractinians) are the corals primarily responsible for laying the foundations of, and building up, reef structures.
Answer:
What role does kudzu most likely play in the environment in the United States? Kudzu experiences loss due to overeating by livestock. Kudzu is very susceptible to harsh winter conditions. Kudzu outcompetes native plants for sunlight and nutrients
Explanation: yep
three domains , archae- 1st appeared, prokaria- not closed by nucleus and eukaria closed by nucleus
Accumulation of substances such as pesticides or other chemicals in an organism
