Answer:
The simple subject is dollars
Explanation:
The simple subject is the noun or pronoun in the sentence that stands alone. In the sentence given, the clause,<em> </em><em>billions of tax dollars, stands as the subject of the sentence. The simple subject is the 'dollars' that was described by the other preceding descriptors. </em>
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The predicate is, spent on dollar exploration. The simple predicate is spent. The predicate is the verb that stands alone in the sentence and describes the action.
you got the poem or do i have to search it up?
The primary problem is the greenhouse effect. Greenhouse effect is when some gases (including CO2) absorbs some portion of sun's heat to make the atmosphere warm to support life. But when the amount of CO2 etc. increases in the atmosphere, it heats up more than it is required. So, by limiting CO2 emission, we can solve this problem.