The answer is <span>Take consistent amounts of saliva samples from a number of people who have not eaten in 8 hours and measure the quantity of amylase in each sample.
First, the researcher needs to know the quantity of amylase in the <u>same</u> amount of saliva. Thus the amount must be consistent and not varying.
Next, people must not eat in 8 hours, so they are all in the same condition at the moment of collecting saliva. If some eat immediately before the sample collecting while some eat 8 hours before, the content of their saliva will be different.
For the correct results, all conditions must be the same.</span>
the cranial nerve that passes through the cribriform plate of the ethmoid bone is the olfactory nerve.
Olfactory nerve perforate this plate as they pass up to the brain from the mucous lining of the nose.
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Answer:
The organ system that breaks down food is called the <u>digestive system</u>. It follows a process called <u>digestive track</u> which starts from the oesophagus and ends finally at the <u>rectum</u>.
When it helps the organism in question survive
