Answer:
Flow of Energy can be explained by means of two models namely: single channel energy model and Y-shaped energy model.
Hope this helps :)
An experiment or survey must be controlled in order to receive accurate results.
In an experimental group, the independent variable is changed. But in the control group, the independent variable stays the same.
B
water is a miscible liquid which mean other liquid can dissolve in it.Also aqueous solution can dissolve in it.