Correct Answer: C. can sue and be sued

Correct Answer: B. Portugal

Correct Answer: D. prepare an opening statement of affairs

Correct Answer: B. all belivers come to God through Him

Correct Answer: A. return on capital employed

Explanation

Return on capital employed or ROCE is a profitability ratio that measures how efficiently a company can generate profits from its capital employed by comparing net operating profit to capital employed.

Correct Answer: D. D

Explanation

If a body moves with uniform retardation, the velocity-time graph is a straight line.

Correct Answer: A. Eiffel Tower - Germany

Correct Answer: D. Matthew

Explanation

(a)(i) Hydrosphere is the aquatic portion of the biosphere or life supporting living world or earth.

(ii) Examples of hydrosphere are: Lake, Pools, Spring, Oceans, Ponds, Oasis, Rivers, Streams, Manny.

(b)(i) The first law of thermodynamics states that energy can neither be created nor destroyed. The second law of thermodynamics states that in any conversion of energy from one state to another, there is always a decrease in the amount of useful energy.

(ii) Using the second law of thermodynamics, the energy flow across trophic levels can be explained as follows:

• The transfer of energy between trophic levels is not 100%. That means it is not completely transferred.
• Successive levels have less of useful energy and support fewer organisms.
• Primary producers/plants have the highest amount of energy and when herbivores feed on plants, the energy level is reduced.
• When carnivores consume the herbivores the energy level is further reduced.

(c) (i) Local biotic communities and the state each is found in Nigeria are:

(ii) Factors affecting marine organisms are: Temperature, Salinity, Pressure, Turbidity/light penetration, Dissolved oxygen, Density of sea water, PH/hydrogen ion concentration, Waves /up-welling of water, Current and Tides.

(iii) Adaptive features of sea weeds are;

(1) Possession of chloroplast/photosynthesis

(2) Absence of lignified tissue which makes them flexible and able to withstand wave actions

(3) Possession of hold fast for firm attachment to substratum or rocky surface

(4) Body covered with mucilage to reduce desiccation during low tide or on exposure

(5) Possession of air bladders for buoyancy.

Explanation

a) Specific latent heat of vaporization in the quantity of heat required to change a unit mass of a liquid at its boiling point to gas.

(b)(i) Renewable energy sources are sources of energy that cannot be exhausted.

(ii) Renewable energy sources are sun or solar, wave, wind, hydroelectric, tidal, biomass or vegetable oils, geothermal, etc.

(c) Clay pot is porous, therefore molecules of water in the moist jute bag will extract latent heat of vaporization from the tomatoes which will escape through the pores of the pot, thereby causing cooling of the tomatoes.

(i) Mass = density x volume = 8.00 x 10\(^3\) x \(\frac{70}{80}\) x 0.28 = 1568 kg.

(ii) Energy required Q = MC (\(\theta_2 - \theta_1\)) + mL

= \(\frac{10}{100}\) x 1568 x 460(1500 - 25) + \(\frac{10}{100}\) x 1568 x 1.38 x 10\(^5\)

= 106, 388, 800 + 21,638, 400

= 128,027,200J or 1.28 x 10\(^8\)J