Correct Answer: A. have / has

Correct Answer: B. brought a good report from the land of Canaan

Explanation

a(i) Diagram of the mammalian heart

(a)(ii) Pulmonary circulation in mammals takes the following process:The heart muscles contract, allowing de-oxygenated blood from the right ventricle to pass through the pulmonary valve into the pulmonary artery to the lung capillaries for exchange of oxygen and carbon dioxide. Oxygenated blood from the lungs then return by the pulmonary vein to the left auricle.

(b) The processes by which mammalian body reduces its temperature are:

(i) relaxation of hair erector muscles

(ii) increased sweat production

(iii) vasodilation

(iv) reduction in heat generated by muscles

(v) reduction of metabolic activities by the body

(vi) conversion of energy into ATP instead of heat

(vii) panting/yawning also reduces temperatures.

Correct Answer: B. price level

Correct Answer: D. solubility and density

Correct Answer: A. 0.58

Explanation

When x = 2

y = 2(2)\(^3\) - 2(2)\(^2\)

-5(2) + 5

y = 16 - 8 - 10 + 5

y = 3

when x = 2.05

y = 2(2.105)\(^3\) - 2(2.05)\(^2\)

- 5(2.05) + 5

y = 17.23 - 8.405 - 10.25 + 5

y = 3.575 - 3

Difference = 3.575 - 3

= 0.58

Correct Answer: C. \(\frac{?21}{3}\)

Explanation

2√7- 14/√7 +7/√21

L.C.M is √21

\(\frac{√21 * 2√7 - √3 *14 + 7}{√21}\)

=\(\frac{2 * 7√3 - 14√3 + 7}{√21}\)

= \(\frac{14√3 - 14√3 + 7}{√21}\)

=\(\frac{7}{√21}\)

or

\(\frac{7 \times √21}{√21 \times √21}\)

= \(\frac{7 \times √21}{21}\) or \(\frac{√21}{3}\)

Correct Answer: B. practicable

Explanation

Feasible; in this context feasible means, something that is workable, practical, achievable.

Correct Answer: A. heterotrophic

Explanation

Heterotrophic nutrition is a type of nutrition in which an organism obtains its food by consuming organic matter from other organisms. In the case of pitcher plants, they capture and digest insects as a source of nutrients to supplement their diet, especially in nutrient-poor environments. This carnivorous adaptation is a specialized form of heterotrophic nutrition, as the pitcher plant relies on consuming other living organisms (insects) to meet its nutritional needs. The pitcher plant is a carnivorous plant that has modified leaves forming pitcher-like structures.

Explanation

(a) Roles of advertising are:

(i) Advertising arouses consumer's interest.

(ii) It makes consumers to be aware of the existence of new products, services or ideas.

(iii) It informs and educates the people on how to make use of the product or service

(iv) Advertising informs people where to obtain goods and services

(v) Advertising improves the quality of goods and services.

(vi) It informs the public about the price of the goods.

(vii) Business firms also use advertising in projecting and promoting their image of producing high quality goods and rendering reliable and efficient services.

(viii) It helps to make brand names of commodities known to members of the public, that is, creating awareness for the product.

(b) Advantages of using television as a medium of advertising are:

(i) The customers are able to see the actual shape, form and colour of the product.

(ii) It appeals to two senses - sight and hearing.

(iii) The techniques employed capture the attention of everybody.

(iv) The customers can also see the actual method of using the products.

(v) It permits the demonstration of the products advertised for everybody to see.

(vi) It helps to reach very large audience.

(c) Disadvantages of using television as a medium of advertising are:

(i) Only the few people who have access to television sets get to view the advertisement.

(ii) Unscrupulous advertisers can utilize electrical techniques and photo tricks to give undue credits to the products.

(iii) Impulse buying may be misleading.

(iv) Power cut means the advertisement cannot be watched.

(v) Viewers of television may be confused of similar brands of goods.

(vi) It is expensive.