The correct answer is A.
The use of antibacterial drugs can cause modifications in the genetic material of the concerned bacteria. If the genetic material of the bacteria are modify, that means they have undergone mutation. Because the base sequence of the normal and that of the mutated gene is different, antibiotic will not be able to recognize the bacteria again and thus will not be able to attack it.
Answer:
you can see the head(start) of the train
Answer:
The oldest fossils, between 3.5 and 3.8 billion years old, are then accepted as both the first life and prokaryotic.
It has evaporated and turn into gas however if it didn’t dry up animals could have taken it
