Correct sentence: Camels can go without water for two weeks.
Step-by-step explanation:
- Capitalization: Use normal capitalization: only the first word of the sentence (or proper nouns) should be capitalized. So write Camels, not CAMELS.
- Punctuation: End the sentence with a period.
- Verb and subject: The plural noun camels with the modal verb can is correct: Camels can...
- Clarity (optional): If you mean that two weeks is the maximum time, it's clearer to say "for up to two weeks" or use the word "survive": Camels can survive without water for up to two weeks.
Short tip: Change all-caps to normal letters and add a period. Example: Camels can go without water for two weeks. Or, for more precise meaning: Camels can survive without water for up to two weeks.