State the advantages that erect posture and large brain volume gave humans over other primates.

State one advantage of a.c. over d.c.

State two advantages of an electromagnet over a permanent magnet.

State two advantages of an aneroid barometer over a simple barometer.

What is a transgenic crop? State the advantages of the technique involved in the production of transgenic crop over breeding activities

Persons carrying the dominant gene(s) can taste a particular chemical and are called tasters. The others are nontasters. In a large random-mating human population at the hardy-weinberg equilibrium. There are 36% non-tasters and 64% tasters. The frequency of heterozygotes in the populations is

van der Waal's equation for calculating the pressure of a non ideal gas is (P+(an^(2))/(V^(2)))(V-nb)=nRT van der Waal's suggested that the pressure exerted by an ideal gas , P_("ideal") , is related to the experiventally measured pressure, P_("ideal") by the equation P_("ideal")=underset("observed pressure")(underset(uarr)(P_("real")))+underset("currection term")(underset(uarr)((an^(2))/(V^(2)))) Constant 'a' is measure of intermolecular interaction between gaseous molecules that gives rise to nonideal behavior. It depends upon how frequently any two molecules approach each other closely. Another correction concerns the volume occupied by the gas molecules. In the ideal gas equation, V represents the volume of the container. However, each molecule does occupy a finite, although small, intrinsic volume, so the effective volume of the gas vecomes (V-nb), where n is the number of moles of the gas and b is a constant. The term nb represents the volume occupied by gas particles present in n moles of the gas . Having taken into account the corrections for pressure and volume, we can rewrite the ideal gas equation as follows : underset("corrected pressure")((P+(an^(2))/(V^(2))))underset("corrected volume")((V-nb))=nRT AT relatively high pressures, the van der Waals' equation of state reduces to

State two advantages of parallel circuit over the series circtuit.

State two advantages of H_(2)-O_(2) fuel cell over ordinary cell.

I. Locate and name the water reservoirs in figures (a) and (b). II. Which has an advantage over the other and why?