B because it uses the suns power to make electricity which doesn't do anything bad to the atmosphere.
it also goes with others but i am not so sure
Answer:
4
Explanation:
Relative Biological Effectiveness (RBE) =
Standard Radiation dose / Test Radiation dose
for achieving the same biological effect.
The absorbed radiation dose is measured in units of Gyt(Gray in tissue).
In the given scenario, Standard radiation dose of 250 KVp X-rays = 16 Gyt
Corresponding Test Radiation dose = 4 Gyt
Therefore, Relative Biological Effectiveness = 16/4 = 4
Answer: Concurrent programs are the programs that execute at the same point of time. They are simultaneous in nature with other concurrent programs.They are executed with the help of threads to achieve the concurrency without the issue of scheduling. They are consider long running programs.
The program that has the low execution time compared with all other programs gets executed first.If the case of no progress is seen then another thread is executed.This type of execution gives the non- deterministic situation in which the possibility of leading completion of any particular program cannot be determined.
What are you talking about?
