Think abbut agricultural research. which of the following statements is accurate?
u
genetic modification of food it grow more easily in certain areas.
farmable land has increased as industry and residential development have
increased.
not rotating crops prevents environmental damage and compromises soil.
u
fertilizers and pesticides have made food production more difficult.

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.

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Ionly know number one that’s a galaxy