In the food web below, what is one example of an omnivore? a food web with berry bush, mouse, cricket, squirrel, rabbit, frog, fox, owl, snake
cricket
squirrel
mouse
fox

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.

Which three statements represent the benefits of performing experiments using computer simulations?

What is the value of the standard enthalpy of formation of an element in its most stable form?