The X symbol looks too much like the multiplication symbol, it also makes using it as a variable more confusing.
The answer is B. they embody the idea of descent with modification.
Answer:
<u>d. the cells in primary cell cultures do not divide.</u>
A key difference between primary cell cultures and secondary cell lines is that<u> the cells in primary cell cultures do not divide.</u>
<u>hope</u><u> </u><u>it</u><u> </u><u>helped</u><u> </u><u>you</u><u> </u>
Explanation:
<em>The main difference between primary and secondary cell culture is that the primary cell culture contains the cells directly obtained from host tissue, whereas the secondary cell culture contains sub-cultured cells from primary cell culture.</em>
An intrusion is the action of intruding or intruding. I hope I helped a little!! :-)
Answer: north Austria have very dry summers and the winters are cooler and drier
Explanation: