Answer:
<u>Sulfites</u> are the chemical food preservatives which used in the wine industry but may cause asthmatic reactions in some individuals .
Explanation:
A chemical food preservative is a chemical species which are added to a product such as the beverages , food , drugs , paints , wood etc , to prevent the process of degradation by microbes .
Sulfite is also an example of chemical food preservatives , sulfites helps the food from turning brown , in the presence of air .
Apart from helping the food from degrading , it too have same life - threatening symptoms for some people suffering from asthma .
Symptoms are - breathing difficulty , stomach cramps , tightness in the chest area , diarrhea .
Sulfites are used as a food preservatives in , wine , dried fruits , frozen potato , certain jams .
Answer:
He examined covered and uncovered meat to determine that maggots came from eggs.
Explanation:
Prior to Redi's experiment and other supporting experiments, it was formerly believed that life could emanate from non-living things, for example, the generation of maggots from rotting meat.
In 1668, a scientist called Francesco Redi disproved the idea of spontaneous generation. He did this when he experimented that the maggots from meats are only as a result of eggs laid by flies when they perched on the meat.
He placed the meat in two jars; an uncovered jar and another in a covered jar with a cloth, after several days, the uncovered jar had maggots on the meat, while the covered jar had no maggot on the meat, but on the cloth. With this experiment, he was able to demonstrate that the maggot arose from the eggs of the flies, not the meat itself which is nonliving and hence, disproved the idea of spontaneous generation.
Answer: They compare the number of mutations to determine how long ago species separated and evolved.
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