Answer: Plant cells have a cell wall, and chloroplasts. Animal cells don't.
Explanation:
The changes in foot structure in a bird population over. Evolution leads to less complex organisms. And also the lock-and-key model.
Before it leaves the nucleus, the mRNA is spliced to create mature mRNA. This splicing involves that cutting out of introns, leaving only the exons - which are the segments which code for a protein. Before it leaves the nucleus, the mRNA is spliced once again to create mature mRNA.
Thr answer is c sorry if am wrong
