Explanation

The main changes introduced into the Nigerian government by the 1963 Constitution are as follows:

(i)The Republican Constitution of 1963 introduced a significant change in Nigeria's political history. The Queen of England ceased to be the Head of State of Nigeria.

(ii) The Head of State now became the President though ceremonial, replacing the Governor-General.

(iii) The president was to be elected by the parliament. He could equally be removed by the same body.

(iv) This constitution also gave powers to the Head of State to appoint, promote and transfer judges. The Judicial Service Commission of 1960 was abolished.

(v) The right of appellate cases to the Privy Council in England was abolished and the supreme court now became the highest court in Nigeria, empowered to attend to all appeal cases.

(vi) The Parliament - Houses of Senate and Representatives can only remove a federal judge with 2/3 forming the majority.

(vii) The 1963 Constitution also brought the Director of Public Prosecution (DPP) under the political control of the Attorney - General of the federation.

Correct Answer: C) Fishes

Explanation

This question is asking which organism has a closed and single circulatory system. The options given are Insect, Earthworm, Fishes and Mammals. A circulatory system is the system in our bodies that carries blood and oxygen to all the organs and tissues in our body. There are two types of circulatory systems, open and closed. An open circulatory system is when blood is not contained in vessels and flows freely through the body cavity, while a closed circulatory system is when blood is contained in vessels and pumped by the heart. In this question, the organism that exhibits a closed and single circulatory system is Fishes. Fish have a heart that pumps blood throughout their body in a closed system of blood vessels. This is different from an open circulatory system, which is found in insects and earthworms. In an open circulatory system, blood is pumped by the heart into a body cavity where it bathes the organs and tissues. It's important to note that mammals also have a closed circulatory system, but they have a double circulatory system, which means the blood flows through two separate circuits. This is different from Fishes, which have a single circulatory system. In summary, the organism that exhibits a closed and single circulatory system is Fishes. Insects and earthworms have an open circulatory system, while mammals have a closed double circulatory system.

Correct Answer: A. The vice chancellor enjoys the acknowledgment of the success of his administration

Correct Answer: A. 12

Explanation

9p = 8q - 12

9p = 2(4q) - 12

9p = 2(3q) - 12

9p = 6p - 12

3p = -12

Correct Answer: C. cash discount

Explanation

2%/15 net 30 means that if the customer pays within 15 days of receiving the goods, he may take 2% off the amount stated in the invoice, if does not, he will have to pay the full stated in the invoice within 30 days.

Correct Answer: D. Mobility

Correct Answer: B. uniform velocity

Explanation

The basic component of the cathode ray tube are:

P = Electron gun. Q = Deflector places or oscillators.

R = Screen.

Correct Answer: C. a demystification of death

Correct Answer: B. allocation of resources to alternative uses