Continual eruptions occur along mid-ocean ridges, forming new sea-floor rock. The rocks closest to a mid-ocean ridge are the youngest | oldest. As you move away from mid-ocean ridge, the rocks get younger | older. This implies that crust is being consumed | produced at mid-ocean ridges.

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

How can one make a supersaturated solution? (apex)

What if it is did darwin used to support his theory of evolution