Answer:
Messenger RNA, or mRNA, leaves the nucleus through pores in the nuclear membrane. ... During mRNA processing, the introns (non-coding regions) of the pre-mRNA are removed, and the exons (the coding regions) are spliced together. Additionally, a 5' cap and a 3' poly A tail are added to the pre-mRNA
Explanation:
Answer:
1.abiotic- air and biotic-birds
2.producing delicious and good fruits for animals protect and help them to spread. delicious food attract animals like birds and other animals who are feed on them. when they eat the fruits and the seeds pass by unharmed. these way the seed dispersal occur of a plants.
They help bring about chemical reactions.