| guyz any chemistry/bilogy/physics students plz help me out in the foll questions |
| 1-some metal oxided were heated with non-metals, explain each of the following results lead oxide+carbon=lead+carbondioxide lead oxide+hydrogen=no reaction carbon oxide+hydrogen=copper+hydro oxide(water) mesohiipus became extinct over 30 million years ago, state 2 reasons why? how do scientists know how big horses such as mesohippus were? why do grass do not grow underneath the trees? how many pairs of choromosomes r there in each human body cell? how many chromosomes r present in a human van? thorugh which organ does blood passes that leads changes to oxygen and urea?name 4 groups of animals that developed legs?name 3 groups of animals that developed wings? which animal evolved first? why may animals become extinct which animal has become extinct for 50 million years? |
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