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
Answer:
The brain cells and skin cells both contain DNA molecules, and their DNA molecules contain the same genetic information. The brain cells and skin cells both contain DNA molecules, but their DNA molecules contain different genetic information.
Answer:
Use the drawing tools to form the correct answer on the graph.
Graph the line that represents this equation:
Explanation:
Answer:
True
Explanation:
A testable qustion has to be able to be tested useing experiments
Answer:
Patchy Forest
Explanation:
The Patchy Forest hypothesis about hominin bipedalism states that energy-efficient walking on two legs arose so that hominins could search for food that was dispersed as a result of climatic changes at the end of the Miocene.
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