A ONU consegue executar seu papel nos paises? quais sao seus maiores obstaculos? URGENTE PFV

Which of the filling is an effect of the uneven heating of the earth by the sun ? a sea breeze a land breeze a convection current all of the above

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.