Explanation

(b) Ways in which forest vegetation contribute to Nigerian economy:

(i) Provision of job opportunities for lumber men and forest guards.

(ii) provides wood which serves as firewood or fuel

(iii) Provides raw materials to industries, e.g palm oil for soap-making

(iv) provides revenue to government

(v) Provides foreign exchange earnings

(vi) Provision of timber for construction (vii) Provides income to lumber men and forest guards

(viii) Provides herbs for medicinal purposes

(ix) Some forest fruits serve as food

(x) Raffia palms are used for making baskets, bags, brooms, etc

(xi) Tourism and wild life

(xii) provides leaves for thatching wrapping, etc

(xiii) Trees are used for boat building

(xiv) Production of palm wine

(c) Problems that hindered the exploitation of forest vegetation In Nigeria

(i) Inadequate motorable roads (ii) Poor terrain

(iii) Depletion of natural vegetation (iv) inadequate capital

(v) Presence of heterogeneous trees species (vi) Inadequate technology for tree felling

(vii) Soil erosion/leaching (viii) High cost of survey to determine economic trees

(ix) Some heavy logs sink during transporting than on rivers (x) Risky nature of the felling trees.

Correct Answer: D) Rats

Explanation

The question is asking which animal has a heart with four chambers. The options are Fishes, Insects, Snails, Rats and Worms. To answer the question, we need to know what a heart is and what the chambers of the heart are. The heart is an organ that pumps blood throughout the body. It is responsible for delivering oxygen and nutrients to the cells and removing waste products. The heart is made up of four chambers - the right atrium, the right ventricle, the left atrium, and the left ventricle. Now, back to the question. Which animal has a heart with four chambers? The answer is D, Rats. Rats, like humans and other mammals, have a heart with four chambers. This is because they are warm-blooded animals and require a more efficient circulatory system to maintain their body temperature. In contrast, fish have a two-chambered heart, insects have an open circulatory system and do not have a true heart with chambers, snails have a three-chambered heart, and worms have a simple tubular heart. To summarize, the animal that has a heart with four chambers is a Rat. This is because rats, like humans and other mammals, are warm-blooded and require a more efficient circulatory system. Fish, insects, snails, and worms have different types of circulatory systems and hearts with fewer chambers.

Correct Answer: C. prices of goods and services are rising rapidly

Explanation

Money is considered a store of value, where it can be used as a means of saving and allocating capital. Where the value of goods and services is on the rise, the purchasing power of money drops. With this, the value of the money that was stored years back will no longer have the same value due to the change in the prices of commodities.

Correct Answer: A. movement of water from root hairs into cortical cell

Explanation

Movement of water from root hairs into cortical cells involves osmosis. When a plant's roots absorb water from the soil, it passes through the root hairs and moves into the cortical cells (which are part of the root's inner layer) through osmosis. This osmotic movement of water helps maintain water balance and nutrient distribution within the plant.

Correct Answer: B. 2

Explanation

x + y = 2y - x + 1 = 5

x + y = 2y - x + 1

x + x + y - 2y = 1

2x - y = 1....(i)

2y - x + 1 = 5

-x + 2y = 5 + 1

-x = 2y = 4

x - 2y = -4 .....(ii)

solve simultaneously (i) x 2x - y = 1

(ii) x x - 2y = -4

2x - y = 1

=2x - 4y = -8

3y = 9

y = \(\frac{9}{3}\)

y = 3

substitute y = 3 into equation (i)

2x - y = 1

2x - 3 = 1

2x = 1 + 3

2x = 4

x = \(\frac{4}{2}\)

= 2

Correct Answer: A) NaHSO₄

Correct Answer: A. His horse was named Friday

Correct Answer: A. Collenchyma

Correct Answer: A. device in which the speaker means the opposite of what he says

Correct Answer: C. Entrepreneurship