That the doorknob isn't used that recently by students, since they don't really use that to study.
Answer:
That would be an isotope. An very common example is Carbon-14. Hope this helps.
Answer:
Taxonomy may be defined as the branch of biology that mainly deals with the classification, arrangement and nomenclature of the organism. Organism are classified into the different taxa depending on their similarities and differences.
The shared characters may be defined as the characters that are share among the two lineages. As given in the question, the two humps that are present on the bottom end of Pakicetus ankle bone is the shared distinguish character with the other ungulates that are even toed.
Answer:
The answer to your question is the Golgi apparatus
Explanation:
Mitochondria is letter G
Ribosome could be letter E
Golgi apparatus is letter A
Lysosome is letter B
Golgi apparatus has a function similar to a post office because it modified, sorted, packed and distributed proteins and lipids.
