Which label belongs in the area marked Z? Scales
No jaw
Swim bladder
Skeleton made of bones

no jaw.

Explanation:

they lack bones, it is an invertebrate, they are eel-shaped, with no scales.

whose power in the senate is equal to the power of the speaker of the house?

the outcome of 1970 oil crisis in united states was that, they began to search ways on how to reduce oil.

in 1970 was a period when there were energy and oil crisis. those who were major centers for industrialization were forced to keep way from supplying of petroleum.

some of the result of this crisis was economic growth became stagnant because prices of oil surged.

due to the increased prices some countries like mexico and norway benefited.