Answer:
Radioactive Elements
In elements with more than 83 protons, all of the isotopes are radioactive. ... The force of repulsion among all those protons makes the nuclei unstable. Elements with more than 92 protons have such unstable nuclei that they don't even exist in nature.
Explanation:
hope it helps you
follow me for more
I'm willing to help
Answer:
The thymus gland can be described as a gland that functions both for the endocrine system and for the immune system.
In the immune system, thymus gland plays a vital role in the development of the T-cells. If thymus gland wouldn't be there, then there will be a reduction in the T- cells of the body. Hence, the immunity of the body will be suppressed.
The thymus, till the time it is active, also protects the body from autoimmunity. If thymus is absent, then there will be suppressed autoimmunity in the child.
Answer:
The correct answer is option A-"They release energy".
Explanation:
The phenomenon of radioactive decay, also known as radioactivity or nuclear radiation, occurs when an unstable atomic nucleus emits radiation and loses energy and mass in the process. The elements during radioactive decay release energy and mass trying to reach a stable form. The material that has the unstable nucleus is considered radioactive.
Symaptric speciation is the formation of new species in populations that live in the same geographic area, while allopatric speciation occurs when the population is separated by a geographcial area. So, according to this: The difference between the sympatric speciation and the allopatric speciation is that sympatric speciation involves a behavioral barrier, while allopatric speciation involves a physical barrier.
