Organisms can be classified into one of three domains based on differences in the sequences of nucleotides in the cell's ribosomal RNAs (rRNA), the cell's membrane lipid structure, and its sensitivity to antibiotics.
Explanation:
If you want an answer faster make sure to put it under biology not geography
The 2nd one i just guessed but my instincts tell me it's right, and they are usually right. But if u really need help explaining, go ask a teacher or parent!! i mean i'm a singer, NOT a geologist
Alluvial fans are a mix of sediments made up of mostly sand and gravel that are created when canyons, hills or mountains interact with flowing water. They help with the sustenance of life and irrigation farming as the main source of water.