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Secondary 1 | Science
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I don't know how to do Q3. Please help..
Date Posted: 3 years ago
Views: 674
a) The bread most likely have turned mouldy due to the warm environment in oven.
(assuming, he did not use the oven to toast the bread)
b) To find out if a warm environment is needed supports the growth of mould
changing variable: the temperature of the environment
measured variable: presence of mould after a fixed number of days
constant variable: the type of bread.
If the type of bread used is different, the water content level may vary which can affect the growth of mould since mould needs air, warmth and moisture to grow.
Hope this helps.
(assuming, he did not use the oven to toast the bread)
b) To find out if a warm environment is needed supports the growth of mould
changing variable: the temperature of the environment
measured variable: presence of mould after a fixed number of days
constant variable: the type of bread.
If the type of bread used is different, the water content level may vary which can affect the growth of mould since mould needs air, warmth and moisture to grow.
Hope this helps.
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