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Answer:
In uranium-lead dating, for instance, the radioactive decay of uranium into lead proceeds at a reliable rate. Based on the very old zircon rock from Australia we know that the Earth is at least 4.374 billion years old.
And that's how after rounding we know that earth is 4.5 years old.
Answer:
We know that there are 200 guanine bases so there will be 200 cytosine bases also.
According to Chargaff’s base pair rule,
G+A=T+C=600,
A+200+T+200=600 (since total bases are 600)
A+T+400=600
A+T=200
since there is 50% adenine and 50% thymine , A=100, T=100, G=200, C=200
Verification
A+T+G+C=600
100+100+200+200=600
600=600
Explanation:
<span>All matter is made up of very tiny particles called atoms. Atoms are unable to be divided into smaller particles.
Answer is A.
Wrong answer is B,C,and D.</span>
Mutations typically cause an organism to become extinct.
