A species of seagull migrates into the region in which a crab population lives. This type of seagull has never lived in this particular environment before. The seagulls eat crabs, and begin to prey on the crab population. The smallest of the crabs are able to successfully hide under rocks and avoid being eaten by the seagulls. The largest of the crabs are too big to fit inside of the seagulls' beaks, so the seagulls learn not to try to eat them. Over time, the seagulls prey on the medium sized crabs, and only the smallest and largest members of the initial crab population survive. Which type of selection does the described situation model?

• A. Convergent selection
• B. Directional selection
• C. Random selection
• D. Disruptive selection

The Nigeria Police is an agency of the

• A. judicial arm of government
• B. Ministry of Defence
• C. executive arm of government
• D. Ministry of Interior

Which of the following is not a reason countries import goods?

• A. Differences in natural endowments
• B. the law of absolute advantage
• C. Differences in tastes
• D. The love for other nations

(a) If p varies directly as \(r^{2}\) and p = 3.2 when r = 4, find the value of p when r = 6.5.

(b) Solve the simultaneous equations :

\(\frac{x}{2} + \frac{y}{4} = 1 ; \frac{x}{3} - \frac{y}{4} = \frac{-1}{6}\)

The below picture portrays drunkenness mainly as

• A. an individual habit in the society
• B. a potential health hazard
• C. a challenge to responsible parenting
• D. an environment nuisance

The following are considered good for water ablution except___

• A. rain water
• B. river water
• C. well water
• D. pond

The duty payable on goods produced locally iis

• A. export duty
• B. excise duty
• C. import duty
• D. advalorem duty

The amount of authorized capital that shareholders have subscribed to is

• A. issued share capital
• B. authorized share capital
• C. owner's equity
• D. working capital

Transportation helps economic development through all the following except the

• A. diffusion of ideas and technology
• B. promotion of national and international trade
• C. movement of people and commodities
• D. distribution of population

An object is weighted at different locations on the earth. What will be the right observation?

• A) Both the mass and weight are constant
• B) Both the mass and weight vary
• C) the mass is constant while the weight varies
• D) the weight is constant while the mass varies