What barrier to trade separated the empires of Ghana and Mali from the trading center of Egypt?

Which instrument sends back radio signals to Earth about temperature at various heights in the atmosphere? A. weather balloon B. radar C. sunscope D. barometer

A teacher wants to check the typing proficiency of five students. She gives the same passage to type to all of them.

What happens to the force of gravity between 2 masses of 1 mass is increased?

Hose 1 took 45 mins to fill a pool of height of 20 inches and length 110 inches. Hose 2 took 15 mins to fill the same pool. How long would it take to fill the same pool using both Hose 1 and 2?

Which two branches do the bureaucracy report to? explain

How does glaciers change landscapes as they grow and advance

What's a chief of operation

Which of the following arguments is supported by the demographics of families in the work force, as described in the lesson? Housing is the only sector to see steady growth. Women account for about half of all purchases.

The largest proportion of the u. s. population is mainly concentrated in which of these regions? the largest proportion of the u. s.

Select the requirements that employers might ask for beside a college degree. 1. apprenticeship 2. license 3. unpaid internship 4. vocational training 5. practical experience 6. investing in nonprofits