Independent Variable:<span><span>Changing the mass </span>჻ Weight force (F).</span>
Dependent Variable:
<span>The extension of the spring Δx.</span>
Answer:
I think A, "Primary pollutants from a stationary source"
Explanation:
Got it right on exam :)
Answer:
ok I'm <em>pretty </em>sure that for #1 it's either a or d, its deffinetly not b or c
and for #2 its b, but i'm not entirely sure, its been a while since I've done biology
Explanation: