Komatiite is a well-known source of copper ore.

False

Explanation:

The komatiite is a type of igneous rock. It is not very common igneous rock though, but instead it is relatively rare. This types of igneous rock has very high melting point of about 1,600 C degrees, and it is extremely hard rock.

The komatiite can be found only in areas where the crust is very old, or rather where the crust is the oldest on the our planet. This type of rock can be found in South Africa, in Canada, Australia, and on the Guiana shield.

The importance of this rock is mostly seen in that it is associated with nickel ore and with gold, two metals that are highly valued and used. It is easy to sea that the komatiite is found where there is gold as the places where it can be found are actually the places that also have the highest gold reserves.

a maximum–minimum thermometer. the scales are fahrenheit on the inside of the u and celsius on the outside. the current temperature is 23 degrees celsius, the maximum recorded is 25, and the minimum is 15, both read from the base of the small markers in each arm of the u tube. the bulbs are hidden by a plastic housing.

six's thermometer is a registering thermometer which can record the maximum and minimum temperatures reached over a period of time, for example 24 hours. it is used to record the extremes of temperature at a location, for instance in meteorology and horticulture. it was invented by a british scientist james six, born in canterbury, in 1780; [1] the same basic design remains in use.

it is also commonly known as a maximum–minimum, minimum–maximum, maxima–minima or minima–maxima thermometer, of which it is the earliest practical design.

the thermometer indicates the current temperature, and the highest and lowest temperatures since last reset.