Because one might have other minerals in it as well
Explanation:
It is because we are, this is the first time in human history, where we have technology and science is widely accepted, without being ridiculed by religious figures. We are truly out of the dark ages and the basic humanity of a few hundred years ago and we are now in the age of light, where people can be cured of many ailments and you don't even have to get up from your lazy buttocks to get food, you can just shout at a machine to do it.
Almost each and every activities of human beings are being done with the support of science and technology.We take support pf science and technology in educational field banks industrial sector as well as in home .Without science and technology ,nobody can imagine for luxurious life in this world.Due to these reasons,modern world is called age of science and technology.
hope it helps :)
Answer:
C
Explanation:
just think about it they are Langer in the winter and shorter in the summer
