Answer:
B - between 100 and 500 million year old.
Explanation:
Because X is older than the 100 layer but younger than the 500 layer according to the position in the picture.
<h2>Mutation will occur </h2>
Explanation:
Base excision repair operates for small DNA damage such as deaminated bases
- DNA glycosylase plays an important role in cleavage of glycosidic bond of abnormal base (does not cleave phosphodiester bond)
- Uracil is incorrectly paired with guanine then mutation will occur
- The original GC base pair will change into AT base pair(transition of GC to AT)
- Transition is a mutation in which one purine(adenine or guanine) is substituted for other or one pyrimidine(cytosine or thymine or uracil) is substituted for other
Based on the note, Jorge is at the beach, because playa means beach in Spanish.
<h3>
What is playa?</h3>
Playa refers to a flat plane area.
In the note, playa is written, which means beach in Spanish.
So, from the note, we can assume, that Jorge went to the beach.
Thus, Jorge is at the beach.
Learn more about beach
brainly.com/question/15524787
Answer:
When something goes wrong with the sinoatrial node, you may develop a consistently slow heartbeat (sinus bradycardia) or the normal pacemaker activity may stop entirely (sinus arrest). If sinus arrest occurs, usually another area of the heart takes over pacemaker activity. This area is called an escape pacemaker.
Explanation:
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