Neither is correct actually
Answer: The virus weakens as time passes.
Explanation: The virus will weaken continuously during transmission, and will reduce its toxicity after several generations of transmission, without causing much harm to the human body.
THE WORLD RESOURCES SIMULATION CENTER. ... The WRSC will provide global leaders from business, governments, education and NGOs a resource for cooperation and collaboration to make informed and sustainable choices for humanity as a whole in the shortest possible time.
Thermal energy transfer. Ex. Hot to Cold
