Why dose the supply curve slope upwards?

Why dose the supply curve slope upwards? How many children dose the mother have?How many children dose the mother has?which is right and why? 微观经济学 The supply of oil will never actually run out.Why?The supply of oil will never actually run out.Why?从微观经济学的角度回答 there s plenty of fish in the sea why dose your one have to be The Daily Dose是什么意思? why dose the author say that it is possible to sum up the british people with a few phrases? 英语翻译Similarly the decrease in the feed conversion amounted to 0.037 percentage unit for each increase of 1 mg/kg of dietary supply,within a restricted range of dose when dose the class begin? who dose the h______ in your family?My father dose supply Why did not Cathy go to the cineme wiyh you last night?-she( )her homework A.dose B.didA.dose B.did C.was doing Dhas done为什么选C? tell me why,dose it have to be like this. 快救我啊＋＋＋＋＋讲解哦Do you know ____ the peasants make of the fallen fruit?A:how B:why C:what D:what use______his work was still as it had been?A:why it dose B:what it dose C:what it is D:why it isWhat is that building?____the garden ---The medicine tastes so bad.---It surely dose.But it will ( ) you good.急A.give B.want C.do D.helpbut why? Do you know China's GDP and GDP per head in recent years?dose the average living standard in China increase or decrease ,Why? Dose the girl dance ______(beautiful/beautifully)? dose she ( )up in the morning early When dose the autumn term begin?