In most urban areas, it is very common that there is a lot of pollution as a result of all the cars and pollutant producing things like vehicles. Thus making it quite a problem as it can have many health implications (if on a large scaled (see cities like China where people have had to wear masks to prevent any toxication)). Pollution also contributes to global warming which is an ongoing issue that affects the entire world.
Answer:
Explanation:
You can usually tell from the abstract, or summary of the article whether an article is related to the topic. If there is not an abstract, read the introduction of the article, then scan the article headings.
True, Europeans were capable to enslave the people they destroyed. The slave trade had cut many African kingdoms. Europeans demanded that Africans practice slavery.
<h3>What things did European traders trade for African slaves?</h3>
In African ports, European merchants exchanged metals, cloth, beads, guns, and shell for captive Africans brought to the coast from the African interior, especially by African traders. Many captives died just during the long overland trips from the interior to the coast.
<h3>What gave elevation to the slave trade?</h3>
The lack of a qualified labor force in the Americas and the decline of the West African population caused citizens to seek a living elsewhere. The shipment of gold from the Americas to Europe caused farmstead owners to seek affordable laborers.
To learn more about African kingdoms, refer
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The superficial change in a system which itself stays invariant is termed <u>First-order</u> while the basic change in the structure of a system is called a <u>second-order</u>.
<h3>What is a
change?</h3>
This refers to any consistent trend in the environment that affects a substantial part of the globe.
However, the First-order is used when for the superficial change in a system and the Second-order is used for the basic change in the structure of a system.
Therefore, the "First-order" and "Second-order" are the respective answers.
Read more about change
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An ionic solution would be able to conduct electricity where as the covalent would not so if you have a conductivity tester which are available in most labs you should be able to distinguish between the 2
