11.
(1 pt)
which group best describes the order of events in the development of the airplane?
group a
hot-air balloon flights pioneer air travel
aviators fly gliders—heavier-than-air aircraft with no engines
development of engine-powered machines with propellers and lightweight motors
first-ever flight across the english channel
construction of the first military airplanes
world's first scheduled commercial airline
group b
development of engine-powered machines with propellers and lightweight motors
world's first scheduled commercial airline
first-ever flight across the english channel
hot-air balloon flights pioneer air travel
aviators fly gliders—heavier-than-air aircraft with no engines
construction of the first military airplanes
a.
group a
b.
group b

d. migration

the answer as multiple choice is c

africa, the second-largest continent, is bounded by the mediterranean sea, the red sea, the indian ocean, and the atlantic ocean. it is divided in half almost equally by the equator. the continent includes the islands of cape verde, madagascar, mauritius, seychelles, and comoros.

africa’s physical geography, environment and resources, and human geography can be considered separately.

the origin of the name “africa” is greatly disputed by scholars. most believe it stems from words used by the phoenicians, greeks, and romans. important words include the egyptian word afru-ika, meaning “motherland”; the greek word aphrike, meaning “without cold”; and the latin word aprica, meaning “sunny.”

today, africa is home to more countries than any other continent in the world. these countries are: morocco, western sahara (morocco), algeria, tunisia, libya, egypt, sudan, chad, niger, mali, mauritania, senegal, the gambia, guinea-bissau, guinea, sierra leone, liberia, côte d’ivoire, ghana, burkina faso, togo, benin, nigeria, cameroon, central africa republic, equatorial guinea, gabon, congo, democratic republic of the congo, angola, namibia, botswana, south africa, lesotho, swaziland, mozambique, zimbabwe, zambia, malawi, tanzania, rwanda, burundi, uganda, kenya, somalia, ethiopia, djibouti, eritrea and the island countries of cape verde, madagascar, mauritius, seychelles, and comoros.

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