Which of the following is a non-renewable resource a.gold b.river c tree d.carbon

1 answer:

6 0

The answer would be A, Gold.

Once the the amount of gold posited in the earth's crust or mantle is used up or depletes then there is no way to to replenish the gold deposition. This is not the case of the others because you can use reforestation to replenish a forest, water cycle replenishes the river as well as the carbon cycle shows how carbon can be replenished (NOTE: coal is carbon but carbon is not necessarily coal so where as carbon can easily be replenished, it is not the same for coal which is non-renewable).

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sergejj [24]

Active Immunity is natural.

Passive Immunity is maternal.

Active Immunity from Vaccination.

Passive Immunity is Artificial.

Passive Immunity:

Does not require previous exposure to a disease agent

Takes effect immediately

Does not last long (up to a few months)

Active Immunity is produced inside of the body, whereas passive immunity is introduced from outside of the body.

Active Immunity is from direct infection and vaccination.

Passive Immunity is from Breast milk, Injection, Mother to baby through the placenta.

Active Immunity takes effect over time (typically several weeks).

Passive Immunity takes effect immediately.

Active Immunity's length of efficacy is Long-term to lifelong.

Passive Immunity is short-term.

Active Immunity is produced by memory cells, Passive Immunity is not.

Hope this was insightful and enough information.

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The answer is C. HOPE THIS HELPS

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