Surface craters refers to a short-term environmental change would a very small asteroid or comet impact on Earth most likely cause.
Answer:
The correct answer is - C. retention of their own genome.
Explanation:
The endosymbiotic theory is a theory that suggests that eukaryotic cells are developed from prokaryotic cells. According to this theory, organelles like mitochondria are developed in eukaryotic cells as the result of proteo-bacteria cells engulfing aerobic bacteria.
The evidence of this theory can be seen as the mitochondria has their own genome such as circular DNA and ribosomes as the prokaryotes.
Answer:
The answer is number 4. asI think
As such, it is a Carcinogen which is basically just a substance that is known to cause cancer.
Hope this helped :)