Answer:
symbiotic relationship
Explanation:
A symbiotic relationship is a relationship in which the members of the relationship get benefits from each other....... In roots of leguminuous plants , the bacterias are the only source for nitrogen by plants & in turn plants provide food to bacterias
One astronomical unit<span> is the approximate mean</span>distance<span> between </span>the Earth<span> and </span>sun<span>. It's about 93 million </span>miles<span> (150 million km), or 8 light-minutes.</span>
<span>The thinnest parts are oceanic crust, while the thicker parts are continental crust.</span><span />
Synovial fluid
This is fluid secreted by the bursa sac to nourish and lubricate the joint
