Explanation

(a) \(p \propto r^{2}\)

\(\implies p = kr^{2}\)

\(3.2 = k(4^{2}) \implies 3.2 = 16k\)

\(k = \frac{3.2}{16} = 0.2\)

\(\therefore p = 0.2r^{2}\)

When r = 6.5,

\(p = 0.2 (6.5^{2}) \)

= \(0.2(42.25)\)

\(p = 8.45\)

(b) \(\frac{x}{2} + \frac{y}{4} = 1 ... (1)\)

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

Adding equation (1) and (2), we have

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

\(\frac{5x}{6} = \frac{5}{6} \implies x = 1\)

Put x = 1 in (1),

\(\frac{1}{2} + \frac{y}{4} = 1 \implies \frac{y}{4} = 1 - \frac{1}{2}\)

\(\frac{y}{4} = \frac{1}{2} \implies y = 2\)

\((x, y) = (1, 2)\).

Correct Answer: D. increasing dehydration

Correct Answer: B. thief

Correct Answer: A. BIOS

Correct Answer: D. The same number of protons and electrons

Explanation

Isotopes of an element have the same number of protons (which defines the element) but may have different numbers of neutrons. Since atoms are electrically neutral, the number of protons must equal the number of electrons in an atom.

Correct Answer: C. 120°

Explanation

(a) Five management methods adopted in the forest areas to ensure a continuous timber supply are:

(i) Forest Regulations : These are laws made by the government to conserve or preserve forest trees. No person can cut down timber without government permission.

(ii) Selective exploration: Forest trees can be cut down while allowing others to reach maturity before they too are cut

(iii) Afforestation: This is the planting of new trees to replace the ones that have been cut.

(iv) Fire prevention: This prevents annual bush burning and where possible, establishes fire breaks.

(v) Taungya system : This system allows the farmer to plant his crops after which they will plant economic trees on the same piece of land.

(b) Six benefits derived from forestry and range are:

(i) Supply of food such as fruits, seeds. bush meat, etc.

(ii) Supply of fuel (fire wood). (iii) Provision of timber for furniture and buildings.

(iv) Provision of employment to some people. (v) Forest is a source of medicinal herbs.

(vi) Provision of pulpwood for paper making.

Correct Answer: A. epigram

Explanation

26 Olubayo Street

Ogba, lkeja

Lagos.

15th May, 2003.

Dear Oladele,

I was delighted to learn that you've gained an admission into Prospect High School, a boarding secondary school. I am therefore writing to tell you about some problems you are likely to face as you go into secondary school. I will also tell you the possible ways of solving these problems so that you will not experience a hard time at school.

The first problem you may have to face is coping with the challenges ofbeing a student in a totally new environment socially and educationally. As secondary school is quite different from primary school, you are likely to face new challenges. This level ofeducation is more tasking and challenging than primary school education.This means thatyou will have to sit tight to meet the demands of this great step in your life.

You must always do your school works on time and treat them with all the seriousness they deserve. This will put you in a good stead with your teachers. Try to do all your assignments very well, because they are added up at the end of the term, as your continuous assessment marks. You must try to be the best, this you can achieve by diligent study

Secondly, you are likely to experience bullying from the older students.Take heart, as this is an inevitable aspect of what you should expect as a newcomer.This is one ofthe worst things a young child ofyour age could face. Bullying is when seniors deprive juniors ofwhat is rightfully theirs, punish juniors unnecessarily and simply maltreat them.

You may not offend a senior but because he wants to show that he is a senior, he may just decide to treat you badly. I know it is very painful, because it happened to me when I was in your shoes. On the day in question, I went to fetch water from a stream.As I was getting to the entrance ofthe hostel, a senior just accosted me telling me to carry the bucket of water to his room. This made me cry bitterly but there was nothing I could do.

Thirdly, you may likely face the problem of getting new friends. It would be impossible to enjoy your secondary school life without friends. As you know, I had lots of friends while in school and I really enjoyed it. What you just have to make sure you do is that you must choose good and hardworking friends. Your friends must be friends with good qualities.An adage thus goes: show me your friends and I will tell you who you are? As a good child, if you keep bad friends, you will soon be like them. This will therefore make you a disgrace to our family and I am sure you don't want to be that.

In order to solve these problems, look for a teacher who you like best and make him your foster father. He will monitor your activities in the school. You should also look for a senior most probably in senior secondary school three. You will have someone to run to if you are bullied.

You must also be nice to your mates, seniors, teachers and in general be a very good child so th.at you can make our parents proud.

How are you? I hope that you are getting ready for the new challenges. My regards to Toni Shala Jide Mummy and Daddy. I hope that Aunty Seun and her children are fine.

Yours sincerely,

Boluwaji.

Correct Answer: D. help in the distribution of food