Is it possible for two organisms to have the same species but a different genus?

Yes

Explanation:

Two organisms with binomial names that have the same species but different genus are very likely more different from each other than two organisms that share a genus but have a different specific epithet

answer; ///(b) it is composed of four protein chains and four heme groups;

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%