Answer:
light year is a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 ×10^12 km (nearly 6 million million miles).
D its D Because if you think about it....What is the role of cells? without cells we would be sick and all the bad bacteria would be able to flow into our bodys no problem at all.
Highly conserved genes are important for normal function of the organism of every species from prokaryotes to eukaryotes. So such genes do not mutate easily and are highly preserved.
https://socratic.org/questions/what-does-it-mean-for-a-gene-to-be-highly-conserved
Hope this helped!!
~xox Melis
Answer:
The rocky, brittle lithosphere cracks. These cracks are called faults.