How did Alfred Wegener use rock and fossil evidence to support his hypothesis of continental movement.

1 answer:

7 0

Fossils and rocks identical to each other wet found on separate continents because rocks and the animals that formed those fossils can't swim the logical explanation was that the continents split after the rocks and fossils were formed

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Land plants have to prevent;<br> a) excessive growth<br> b) drying out <br> c) seed development

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D, they need to be able to absorb and keep water to prevent drying out

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Thymine dimers can be repaired by Photoreactivation Repair or Nucleotide Excision Repair. - true or false?

Aleksandr-060686 [28]

Answer:True

Explanation:Basically thymine diamers are mismatched pairs (thymine binds with another thymine instead of binding with adenine) and may lead to unwanted results so the mismatching can be repaired by using two methods which are as follows :

1-the PRE enzyme activated by blue light breaks the thymine diamer and some of the surrounding bonds the strand is cut and DNA polymerase then restores the normal base pairing

2-UVR system breaks dimer creating a gap when a gap is created and the molecules appear unpaired it is filled by proof readers hence restoring normal base pairing.