When bacteria use citrate, the medium becomes alkaline, and the bromthymol blue indicator will be when bacteria use citrate, the medium becomes alkaline, and the bromthymol blue indicator will be green yellow clear black blue

Blue

Explanation:

The test is called Simmons citrate agar tests (based on how organisms can utilize citrate). It can be used in differentiating the Enterobacteriaceae.

In this case, the organism is citrate positive if the medium turns blue

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this