How are nuclear reactions used to meet the world’s energy needs? A. Both fusion and fission are used to generate electricity, but more fission reactors than fusion reactors are in use.
B. Fission reactors are used to generate electricity, but fusion is not yet practical enough to be used.
C. Both fusion and fission are used to generate electricity, but more fusion reactors than fission reactors are in use.
D. Fusion reactors are used to generate electricity, but fission is not yet practical enough to be used.

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Explanation:

A. Both fusion and fission are used to generate electricity, but more fission reactors than fusion reactors are in use.

Explanation:

Nuclear energy originates from the splitting of uranium atoms – a process called fission. This generates heat to produce steam, which is used by a turbine generator to generate electricity. Because nuclear power plants do not burn fuel, they do not produce greenhouse gas emissions.

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emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50