Answer:
Nadia downloads online course books rather than carrying them.
Luca relies on a printed store receipt instead of the e-mailed version.
Explanation:
Embryonic stem cells can be grown relatively easily in culture. Adult stem cells are rare in mature tissues, so isolating these cells from an adult tissue is challenging, and methods to expand their numbers in cell culture<span> have not yet been worked out. This is an important distinction, as large numbers of cells are needed for stem cell replacement therapies.</span>
Answer:
C.
Explanation:
This is referred to as electronegativity and it is the how molecules are considered polar or not.
