B) Ecosystem - which includes the living communities and nonliving factors in an environment
You can use dimensional analysis to figure this out.
× 
= 3 grams
If done correctly, ml and ml will cancel out, leaving you with grams.
If you don't know dimensional analysis, simply multiply <em>3 ml</em> by <em>1 grams </em>and that should still get you 3 grams.
<h2>What is the atmosphere attracted by earth</h2>
<h3> Let's begin.</h3>
Our Earths magnetic field may be to blame.
<em>Is there anything further to your question?</em>
Let me know!