There are a number of metals which are called trace elements, that the body needs in very small amounts; these include copper and zinc.
NO!!! It does not occur naturally. However, its mineral ores are very common. e.g. Haematite, Magnetite.
Alcoholic Fermentation does not occur in human bodies but rather in plant cells when they do not receive adequate amounts of the necessary amounts of nutrients and minerals. Lactic fermentation however occurs in human cells located in the cytoplasm after glycolysis.
In the case of animals, these exchanges occur in the capillaries.
Blood glucagon increases
There are really no steps in natural selection - just conditions required for it to occur.
Fortified foods
fortified
Minerals \m/
No, Technetium does no occur naturally on earth except in trace amounts in molybdenum deposits.
It DOES occur naturally. It is an ore. It is not man made.
Thallium, discovered in 1861, does occur naturally, but not in its pure form.
Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.
Firstly, a plant is required, then is the sunlight. Plants prepare their food in the presence of sunlight and this process is said photosynthesis. You also need carbon dioxide and water, as well as certain nutrients.
i dont think so yeast spores occur naturally in the air, but the heat required to prepare popcorn would kill them
94 kinds of atoms occur naturally on earth
Chlorine gas does not occur naturally as it is too reactive. Chloride salts occur naturally. The most common is sodium chloride, NaCl. Chlorine, Cl2, is obtained by electrolysing molten NaCl.
Yes, it occurs naturally on earth.