<span>The question is asking us to complete the sentence "If, after extensive research, the expected observations predicted by a theory fail to materialize, then the theory" and the way we can complete it is by saying that the theory is likely wrong - the theory must then be rejected and a new theory should be proposed, one that will lead to a new hypothesis which then should be tested. </span>
Answer:
2.
Explanation:
only 2 of them are the causes of air pollution
The enriched uranium produces heat from a fission chain reaction that boils the water, and the control rods control the rate of the reaction; D.
Answer:
This question is incomplete
Explanation:
Introns are non-coding regions of a DNA that removed by RNA splicing prior to translation. Alignment is usually done between sequences to see and understand the identity and similarity between two or more sequences.
A region/base is said to be conserved if there is NO change in any base in that particular region. A multiple sequence alignment (MSA) can be used to align the donor sites of all the introns to see the bases that have not "changed" (and still remained in there exact position) hence conserved across all the donor sites.
NOTE: The donor site of an intron is the 5' end, thus the first five bases in the 5' end are to be used here
The Law of Superposition.
The Law of Superposition states that each layer is younger than the one beneath it.