The set up below was used to calibrate a thermometer. observed
(lm:
Ice
manometer
steam
steam
1
boiling water
3
n
Which temperature was being marked with the use of the first set up? (l mark)
) Why should the ice be pure?
(l mark)
1) Why should the thermometer be on steam and not dip in the water when
determining the upper fixed point
(l mark)​

ice, and the 2nd question I'm not sure

this transfer is call conjunction

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.