(a) Berdasarkan gambar di Kutub Utara, apakah yang boleh a tentang perkembangan Zaman Air Batu?
(b) Pada pandangan anda, mengapakah kehidupan 18,000 tahu
mencabar berbanding dengan hari ini?
Apakah perkembangan yang berlaku pada Zaman Pleistosen?
Terangkan faktor-faktor yang membolehkan manusia berhijrah
pada Zaman Air Batu Akhir.
Mengapakah kita perlu mengekalkan kelestarian alam sekitar?
Pada pendapat anda, mengapakah berlaku kepupusan hai
semasa Zaman Pleistosen pada Zaman Air Batu Akhir?
incangkan kesan kecairan air batu terhadap perubahan fi​

answer: your mm

explanation:

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.