Forces and Motion

global warming

what is global warming well global warming to me is when the earths temperature increases in average temperature of the earths near surface, air and oceans,most of the observed temperature increases caused by increase concentration of greenhouse  gases like carbon dioxide mathan,nitrous  oxide,etc into the atmosphere

what i have done to investigate the presence of starch in leaves and how

Aim-

To investigate the presence of starch in the leaves we experiment on.

Materials-

2 leaves, Boiling  tube,ethanol,tweezers,iodine

Method-

first you will need 2 leaves add boiling water to kill them. Then place the leaves in a boiling tube with Ethanol, then you will see the colour draining from the leaves. Remove the leaves then wash them, after that place them on a tile then add iodine to both leaves and see what happens.

Conclusion-

I have found out that there is colour change happening green to purple which i had found out that had starch in.

Nau mai, haere mai ki tēnei taonga

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