I'd say D) Sandwich Generation
I might be wrong, but wanted to give it a shot
~ Good luck!
One of the most important sources of energy is the sun. The energy of the sun is the original source of most of the energy found on earth. We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar (photovoltaic) cells
1) Renewable energy
energy from a source that is not depleted when used, such as wind or solar power
2) non renewable energy
A non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption

Answer:
National security is basically the government ensuring that the state, which includes the citizens, economy or institutions is protected
Answer:
Explanation:
Due to chromosomal duplication and gamete fusion, reproductive differences are inherited from birth. Non-reproductive variants, which can occur before or after birth, are unrelated to variations caused by the fusing of gametes.The primary cause of changes that are not reproductive is a mutation in the DNA sequence.MUTATIONS-A mutation is a sudden, inheritable change to the DNA sequence.X-rays, other high power radiations, or other causes may be to blame for causing mutations.