Which statement describes how heat is transferred by convection? Air molecules touch the warm ground, heating them up.

Warm air rises and takes heat with it; eventually it cools and sinks.

Sunlight travels through space without the aid of fluids or solids.

Land and ocean absorb and re-emit heat from the sun.

the aksumite empire was an ancient kingdom located in what is now northern ethiopia from the period of 100 ad to 940 ad. its capital was the city of aksum. the kingdom established itself as one of the 4 great powers at its time, along with persia, rome, and china.

the kingdom was rich in goods like gold, iron, and salt. it established strong commercial ties with the regions governed by rome, egypt, and persia (arabia). aksum was a key location in this commercial network. trade was also facilitated with the introduction of the aksumite currency.

the answer would be in this answer. someone already asked the question.