Answer:
The level of seed in each feeder
Explanation:
The independent variable is the variable which is the suspected cause of an observation, it is the variable that produce the effect observed in the dependent variable. The dependent variable is the variable that is measured
The independent variable is normally the x-value while the dependent variable is the y-value
In the question, Lana wants to find out the kind of birdseed that the neighborhood birds like (to eat) the most by feeding them different types of birdseed and measuring the level of the birdseed in the feeders at regular intervals
the independent variable is the bird seed types which Lana gives to the birds, to determine the type of bird seeds the birds like
The dependent variable is the level of the seed in the feeder which depends on the type of seeds the birds like.
Yes, it is true, both mass spectrometry and infrared spectroscopy involve interaction of molecules with electromagnetic waves. ;Mass spectrometry method is used to determine the mass of a substance while infrared spectroscopy is used to determine the functional groups in molecules. Both methods involve the analysis of electromagnetic light interaction with molecules.
Answer:
The forces that do non-zero work on the block are gravity and normal reaction force
Explanation:
B) They are all sources of electricity
Hope it helps!!