The answer is A. DNA is the genetic code that eventually gets transcribed into RNA and that RNA is then translated into protein chains (polypeptides). Thus the ultimate purpose of DNA is to build these proteins.
B is wrong because while DNA itself exists in a double helix, its main function is not to build other double helix models. In fact, RNA exists in single helix form.
C is wrong because the brain does not construct the body.
D is wrong because DNA is just a body of information, and not a historical record.
Answer:
climate change, deforestation, and environmental pollution pose a serious threat its future. Solar solutions to energy use, habitat restoration, and clean water systems are just some of the issues covered by Aid for Africa members.
Actually, California is one of the most geologically complex area in the world. Which contribute to its vast amount of water reserve.
This make California a desirable environment for a lot of plants and animals which makes California as one of the best wildlife reserves in the world
hope this helps
Answer:

Ways for pollution free environment are :-
- Follow the 3 Rs ⇻ Reduce, Reuse & Recycle.
- <u>Reduce</u> the consumption of plastic products (use glass bottles, paper bags etc.)
- <u>Reuse</u> old & worn out things instead of throwing them away.
- <u>Recycle</u> your paper & plastic products.
- Use public transport, cycles or just walk ➟ this will reduce smoke & hence will reduce air pollution.
- Turn off the lights & fans when not in use ⎆ for less consumption of energy.
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
# ꧁❣ RainbowSalt2²2² ࿐