A fire is one because it doesn’t matter if zero squirrels are in the forest or none fire will still burn with or without the squirrels
Glucose, which is their natural sugars that they feed themselves with to grow and reproduce properly. also, oxygen is a by-product of the equation.
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>
This is true a theory is an explanation of observable facts and phenomena.
A. That’s true
Because the matter of biology is about everything that alive and human alive too so if we learn biology that will help us to know more about our bodies
