Correct Answer: B. N13,877

Correct Answer: B. Zaki

Correct Answer: B) The United Kingdom

Explanation

The options given are the Union of Soviet Socialist Republics, the United Kingdom, the United States, and Post-Apartheid South Africa. The correct answer is option B, the United Kingdom.

The United Kingdom operates with an unwritten constitution, which is made up of various sources including statutes, common law, conventions, and traditions. This means that there is no single written document that outlines the fundamental principles and laws of the country.

It is important to note that while the United States and Post-Apartheid South Africa also have written constitutions, they also have other sources of constitutional law. The United States has a constitution that is primarily based on a single written document, but it also includes various amendments, statutes, and court decisions. Post-Apartheid South Africa has a constitution that is primarily based on a single written document, but it also includes customary law and court decisions.

In conclusion, the correct answer to this question is option B, the United Kingdom, which operates with an unwritten constitution.

Correct Answer: B. Salt trade

Explanation

The Kanem-Borno Empire prospered due to its control over the salt trade. The empire was strategically located on trans-Saharan trade routes, and it capitalized on this by controlling the trade of salt, a valuable commodity at the time.

Correct Answer: C. 35

Explanation

Let c = no of students that offered both subjects

\(\therefore\) No of students offering Economics = 65 - c

No of students offering Geography = 50 - c

65 - c + c + 50 - c = 80

115 - c = 80

c = 35

35 students offer both Economics and Geography.

Correct Answer: C. Hygrometer

Explanation

A hygrometer is an instrument that is used to measure water vapor in the atmosphere. This is also commonly referred to as relative humidity in the atmosphere

Correct Answer: D. Public Limited Company

Correct Answer: A) 86 cm of mercury

Correct Answer: D) Decomposer

Explanation

In a community, there are different types of organisms that play different roles. Bacteria and fungi are two types of organisms that are commonly found in communities. These organisms are known for their role in breaking down dead organic matter, such as dead plants and animals. This process is important because it helps to recycle nutrients back into the ecosystem. The question is asking us to identify the term used to describe bacteria and fungi in a community. The options given are producers, consumers, scavengers, tertiary consumers, and decomposers. Of these options, the correct answer is decomposers. Decomposers are organisms that break down dead organic matter and recycle nutrients back into the ecosystem. They are essential for maintaining the health of an ecosystem because they help to prevent the buildup of dead organic matter. Without decomposers, nutrients would become trapped in dead organic matter, making them unavailable to other organisms in the ecosystem. It's important to note that while bacteria and fungi are both decomposers, they are not the only decomposers in an ecosystem. Other organisms, such as worms and insects, also play a role in breaking down dead organic matter. In conclusion, in a community, bacteria and fungi are referred to as decomposers because they break down dead organic matter and recycle nutrients back into the ecosystem.

Correct Answer: A. 6.5km