Drag each tile to the correct location.
gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud.
its temperature stays well
below 14 million kelvin.
its volume shrinks and density
increases due to gravity.
its temperature surpasses
14 million kelvin
its hydrogen atoms shed their electrons.
it is spread out, with a greater volume and
lesser concentration of elements.
its hydrogen atoms retain their electrons.

the answer is: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall.

i think its through the fallopian tube

a = executive branch; b = judicial branch

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.