ANSWER ASAP Frederic Griffith used the word transformation to describe the changes in bacteria that he observed. Which is the most useful definition of transformation?
A. a permanent change in gene expression
B. a temporary change in the function or activity of a cell
C. a temporary change in the genetic composition of an organism
D. a permanent change in the genetic composition of an organism

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

Why did the federal government end its support of yucca mountain as a site for long-term storage of nuclear water