Is often a major part of fertilizers since the plant cannot usually produce (or obtain) sufficient amounts.

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Which coal field location is related to coal fields in the eastern united states and supports the theory of continental drift? eastern india southern africa western australia northern south america