Answer:
movement to and fro or around something, especially that of fluid in a closed system.
Stem cell therapies are not new. Doctors have been performing bone marrow stem cell transplants for decades. But when scientists learned how to remove stem cells from human embryos in 1998, both excitement and controversy ensued.
The excitement was due to the huge potential these cells have in curing human disease. The controversy centered on the moral implications of destroying human embryos. Political leaders began to debate over how to regulate and fund research involving human embryonic stem (hES) cells.
Newer breakthroughs may bring this debate to an end. In 2006 scientists learned how to stimulate a patient's own cells to behave like embryonic stem cells. These cells are reducing the need for human embryos in research and opening up exciting new possibilities for stem cell therapies.
Answer:
it's 4/15
Explanation:
because we need to diminish 2/3 on 1'5 to find the pattern then dimininsh 1/5 again to the difference of the first 2 fraction to get the answers
No machine can do the work of one extraordinary person." ~ Elbert Hubbard. "You don't get paid for ...
It depends on the energy released by radioactive decay of
uranium and other heavy long lived isotopes in the Earth's core and the
internal heat of the Earth is produced by the original heat of formation that
resulted from accretion and gravitational contraction.
