Answer:
The independent variable are the vitamins .
The dependent variable are the rats.
Explanation:
The vitamins are the independent variable because they are are controllable. You can control how many vitamins the rats will be given.
<span>B)erosion of soil due to wind
</span>
Atmosphere is air.
Geosphere is rocks/soil.
D. Chromosomes
DNA in the nucleus is found in structures called chromosomes.
Make sure you do not use the exact same thing... I recommend you do this "Expiriment" on your own! :) But I hope this helps!
Because if we're simultaneously moving/manipulating two different variables it can be very hard to determine why one variable is changing and why the other is changing. While this can be done with more complicated experimental designs, it usually is the case that scientists will only manipulate one variable and not two different ones.
