The answer is A. It shows that animals depend on this process for oxygen.
Photosynthesis is how Carbon dioxide (what we breathe out) is turned into Oxygen (what we breathe in)
If Photosynthesis never took place Oxygen would run out and animals would suffocate.
The revision that uses subordination to revise the example is C: "Although it took me a while to get used to the new software, now I like it". Subordinate clauses begin with a subordinate conjuction or a relative pronoun and contains a subject and a verb. However, they are dependent because they do not express a complete thought and therefore cannot stand on their own.
*Although it took me a while to get used to the new software
As you can see, the sentence does not express a complete thought. That is why it is grammatically incorrect.
B, cells usually have a cell wall and a cell membrane depending on whether they are eukaryotic or prokaryotic.
Sun Yat-sen (1866–1925) Chinese nationalist leader, first president of the Chinese Republic (1911–12). In exile (1895–1911), he adopted his “three principles of the people”: nationalism, democracy, and prosperity.
When he either rescues her or kills the dragon
