It can affect our ecosystem in many ways, think about the animals. Where are they going to live? If trees, get demolished to create a hotel, or a gas station.
No
Explanation:
because we consider the experiment provided to be carried out
different experiment have different equipments
what? I think you're missing some crucial information in this question.
Answer:
12
Explanation:
Suppose the four different strains are P, Q, R, S. Thus, the first infection can be from any of the four strains and it occurs in 4 ways.
Since an individual cannot be infected again with the strain from which he/she is been previously infected;
Then, at the second time;
The possible number of strain to be infected with = 4-1 = 3 ways
Thus; the number of possible different levels of severity can be viewed by forming two lettered word P, Q, R, and S without repetition which is:
= 4 × 3
= 12
