pork barrel is a metaphor for the appropriation of government spending for localized projects secure solely or primarily to bring money to Representatives District
Answer:
The correct answer is - option a. It should be testable in a valid period of time
Explanation:
A thought that presents a temporary clarification about a phenomenon observed by a scientist is a hypothesis. The fundamental highlights of a good scientific hypothesis are: testability and falsifiability
A testable scientific hypothesis should answer the logical question. This is one that can be checked valid or bogus utilizing the information gathered or the experience gained.
a good scientific hypothesis must be testable and falsifiable. We should have the option to test the hypothesis utilizing the techniques for science and in the event that you'll review Popper's falsifiability rule, it must be conceivable to accumulate proof that will disconfirm the theory on the off chance that it is surely false.
Thus, the correct answer is - option a. It should be testable in a valid period of time
Billions of years ago, Earth's atmosphere lacked free oxygen.
Scientists call this a highly toxic atmosphere.
<h3>What kind of atmosphere was present on Earth in early times?</h3>
In the atmosphere of the primitive Earth there was no oxygen (O2) and nitrogen (N2), the air being composed of gases such as
- methane (CH4)
- ammonia (NH3)
- hydrogen (H2)
- and water vapors (H2O).
With this information, we can conclude that Early Earth's atmosphere may have been as toxic as that of Venus today. Earth is the only planet that harbors life (as far as we know)
Learn more about Early Earth's atmosphere in brainly.com/question/13154099
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