A. Calcium levels will rise, PTH levels will fall, and PTH mRNA levels will fall. B. Calcium levels will rise, PTH levels will rise, and PTH mRNA levels will rise.
C. Calcium levels will fall, PTH levels will fall, and PTH mRNA levels will rise.
D. Calcium levels will fall, PTH levels will rise, and PTH mRNA levels will rise.

the real answer is b. scintillation counter

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;