Reptile scales are made of alpha and beta keratin and are formed from the epidermis
Answer: D
Explanation: The Ghana Empire, properly known as Wagadou (as Ghana was the title of its ruler), was a West African empire located in the area occupied by present-day southeastern Mauritania and western Mali. Although complex societies based on trans-Saharan trade in salt and gold had existed in the region for centuries, the introduction of the camel to the western Sahara in the 3rd century CE, opened the way to great changes in the area that eventually became the Ghana Empire.
The Ghana Empire grew rich from increased trans-Saharan trade in gold and salt, allowing for larger urban centres to develop. With these commodities being transported and traded through Ghana, the Kingdom was able to become very wealthy by taxing the goods that came through the trade center. It also helped that Ghana had many trade routes that were well protected by its large military force as this encouraged other merchants to come to Ghana for trade.
Answer:
From the political map of a continent, we learn on <u>countries</u> and <u>cities</u> within such countries, especially in <u>capitol cities</u>.
Explanation:
From the political map of a continent, we learn on <u>countries</u> and <u>cities</u> within such countries, especially in <u>capitol cities</u>. In this case, we may learn from continents:
(i) The name, location and geographical extension of every country within the continent on map.
(ii) The name and location of most important city in every country within the continent on map.
<u>Answer:</u>
British Columbia's coastal forests are temperate rain forests which are a home to unique species. These temperate forests are very important to protect because they are among the best store houses of carbon in the world.
Along with this it is important to protect this temperate rain forest because it is house for the Kermode black bear which is unique because of it's white color and it should be protected. Other native animals because of which this forest should be protected are raccoons, beavers, Canada geese.
Answer:
Loess.
Explanation:
The Yellow River is the second longest river in China and the fourth longest single river on earth. There are different numbers for its length, depending on the measurement method: 4845 kilometers is the most common one. Its catchment area covers 752,443 km². The river takes its name from the yellowish color that is created by loess that has been removed and washed into the river via streams and tributaries, which in turn fertilizes the land when it floods over its streams, making fertile land on its way.
