Question

अथवा- भूगर्भ की जानकारी के लिए कोई तीन प्रत्यक्ष साधनों के नाम
लिखिये।​

Answer 1

Explanation:

Convection is the transfer of heat due to the bulk movement of molecules within fluids, including molten rock. Convection includes sub-mechanisms of advection, and diffusion. Convection cannot take place in most solids because neither bulk current flows nor significant diffusion of matter can take place.