Answer:
DNA ligase
Explanation:
After Okazaki fragments (sequences complementary to the lagging strand of DNA) are produced, they must be joined together to produce a continuous strand. The Okazaki fragments are then joined up by DNA ligase, which catalyzes the formation of a phosphodiester bond between the neighboring nucleotides.
1.Tyrannosaurus Rex Lived in the Mesozoic Era
2.The largest mass extinction happened in the Paleozoic Era
3.Life exploded for the first time in the Precambrian Era
4.The Chicxulub crater in the Cenozoic Era
The nervous system and the integumentary system<span />
Answer: you test and use your knowledge
Explanation: i got it right