The correct answer is B
evidence
persuasive arguments must provide evidence and facts to back up its arguments as people tend to believe in facts delivered with evidence. This can take the form of statistics and other forms of scientific facts back up methods.
Natural selection is the change of a species traits and characteristics over time to adapt to its environment. Over a period of time, the species will change and evolve because of its changing traits to adapt.
1. D. Axum
Axum is located in what is now Ethiopia, and was founded by Arabs combining Arabic and African cultures. Axum owed its prosperity to its location along the Red Sea, on the trade route between India and the Mediterranean. Axum exported ivory, incense, myrrh, and slaves. It imported textiles, metal goods, wine, and olive oil.
2. A: Arabic was the main language used when trading with other societies.
Although Arabic was the most common language used in trade, others were used as well, particularly Swahili. In everyday life West Africa had enormous linguistic variety.
The answer would be : D. Russian adaptation to extreme cold
If a steel is exposed to an extreme low temperature over prolonged period of time, the structural form of the steal could be damaged, which could lead to a destruction of a building's foundation. In order to prevent this, a country which extreme winter such as Russia developed a special steel that won't crack.