Answer:
Viruses: stay the same
Infected cells: Increase
Unaffected cells: decrease
Explanation:
You need to test the hypothesis several times and record all results. Once you obtain the same results several times, I think that means its a theory
B is unsustainable as this is a practice of intensive farming usually conducted indoors, and is resource and energy expensive. C is unsustainable because groundwater is a limited resource and groundwater can take 1000s of years to be recharged. D is unsustainable as this involves moving water across vast distances and is expensive and ecologically damaging. A is sustainable as drought-resistant plants would in the long run use less water.
The first one. Gametes are the reproductive cells: sperm and egg cells. These contain the info that is passed on to the offspring, so an inherited mutation must be present in the gametes.