what grade is this because apparently i like to know what grade it is before i solve it
Answer:
Caffeine
Explanation:
In every study, there must be an independent variable and a dependent variable. The independent variable is being manipulated and its effect on the dependent variable is evaluated.
In this study, the independent variable is the administration of caffeine. Its effect on a rat's ability to learn the maze (dependent variable) is evaluated in the study.
B is correct. The model of the river is an example of a physical model.
Answer:
Crystalline and amorphous
Explanation:
Amorphous cells offer higher efficiency than the other two. ... Amorphous cells can withstand higher temperatures without output being affected, compared to poly or mono crystalline cells. Amorphous cells perform better in low light conditions compared to even the most efficient monocrystalline panels