Answer:
1.
Nearly all helium on Earth is a result of radioactive decay. The decay product is primarily found in minerals of uranium and thorium.
In what is called radioactive emission of "alpha particles" the atom of, say uranium, spits out particles in the form of two protons and two neutrons--a helium nucleus.
2.Helium is obtained through natural gas as it is extracted from the ground. The helium is a result of the decay of thorium and uranium. As these elements decay, they release an alpha particle. That alpha particle is the nucleus of a helium atom.
3.Natural gas is separated into its major components through a distillation process known as fractional distillation. Sometimes this name is shortened to fractionation, and the vertical structures used to perform this separation are called fractionating columns. In the fractional distillation process, the nitrogen and methane are separated in two stages, leaving a mixture of gases containing a high percentage of helium. At each stage the level of concentration, or fraction, of each component is increased until the separation is complete.
Explanation:
Answer;
They begin to function at puberty (not true)
Explanation;
-The sudoriferous (sweat) glands are small tubular structures situated within and under the skin (in the subcutaneous tissue). They discharge sweat by tiny openings in the surface of the skin. There are two types of sudoriferous glands; that is; eccrine and apocrin glands.
-Eccrine is the most numerous type that is found all over the body particularly on the palms, soles of the feet, and forehead. Apocrine is mostly on the armpits. They end in hair follicles instead of or pores.
Mosses and algae both belong to the group of non-vascular plants because they lack vascular elements that in plants like ferns and other conduct water and nutrients through the plant. Because of this, the non-vascular plants are unable to control the water flow and the loss of water.
Thinker magma = more explosive. Thinner = less explosive.