Hợp chất X là một peptit trong phân tử X . Nito chiếm 18.92 % Khối lượng . Thủy phân hoàn toàn X chỉ thu được alanin . X là

right

explanation:

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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answerca air mass;