Answer:
Part 1. The amount of calcium is independent variable.
Explanation:
An independent variable is a variable in an experiment which is changed to see its effects on dependent variable.
In this experiment, to know about the causes of osteoporosis, the Ca level in blood or calcium intake in changed.
So the concentration of calcium will be independent variable.
Part 2.
The risk of bone fractures is could be changed with calcium.
Explanation:
In this experiment osteoporosis or risk of bone fracture is dependent variable.
Dependent variable are results of experiment which can be changed by independent variable.
As in experiment, Calcium concentration is independent variable.
So the risk of osteoporosis depends can change with calcium.
Answer:
Explanation:
Transpiration Transpiration is the procedure of water evaporating from the surface of leaves. Ground water is carried through the roots to the under-side of a leaf, and then comes out through tiny pores. It then evaporates into vapour drops before dispersing into the atmosphere. The rates of transpiration get higher with the higher temperatures.
I think it might be B but I am not sure
The sackbut is the instrument related to the modern trombone.