There are 12 pairs of curved bones called X in our chest region. One end of bones X is joined to
backbone and their other end is joined to bone Y in
front to form a box-like structure Z. This strong box
like structure protects the delicate internal organs P and
Q.

What are X, Y and Z?
Name the organs P and Q

12345678910000000000WWEFGHBVCX

RGFVUSHIOuvsD

the eggs of the insects should be the first thing collected at the scene.

false

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.