Answer:
Los tejidos están formados por la unión de células relacionadas. Las células de un tejido no son idénticas pero trabajan juntas para desarrollar funciones específicas.
i need help with this because I’m stuck on this so plz help me it’s this cause it due tomorrow ASAP!
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:
The answer is C because the lions eat the zebras and the gazelles which are the primary consumers and the trees would be considered the producers.