A lot of humans' brains' power comes from the fact that we have an ego and THINK our brain is more powerful when in reality it is just structurally different and just as limited to the same genetic confines as all living creatures.

Our conscious attention makes errors because it is so complex. The brain is not supposed to function in a perfect manner that creates a perfect perception of reality and functions perfectly to its environment but instead the brain is to function just well enough to keep you alive and mating. Its job is to make a perception of reality just accurate enough to keep you alive but it must simplify reality because our brain is nowhere near powerful enough to be able to accurately perceive our reality yet alone how to attend to it perfectly so it does the best it can.

The carbon bonds release a lot of energy when exposed to a little heat and oxygen. Metal will melt after you put intense amounts of energy into it because it doesn't have carbon or carbon bonds with energy. If you take a lighter to (most) metals they will not experience any physical changes. Carbon can melt but it has to be at incredibly high temps to do so.

Yes, you are exactly right...and, the wifi and radio waves ARE electromagnetic waves! they are exactly like visible light just wifi and radio waves, microwaves, etc., moves in a different frequency. Your eyes can only pick up certain frequencies of Electromagnetic radiation so we can only see small amounts of the frequency spectrum but like you said, with the right materials almost all of any radiation can be blocked, it just depends what materials you are using and what frequency the radiation is. All different radiation frequencies are absorbed differently by all materials so it is likely that all frequencies have at least one material where where 99.9% of energy is absorbed and more often than not there are multiple different

In Both instances materials are absorbing the energy of waves. So, sound CAN be blocked entirely, you just need enough material to absorb it. The major differences in how sound and light differ is because of the type of energy they carry. Sound waves use the mass that it is traveling through and moving to create a force... and lightwaves carry electromagnetic radiation (with no mass) that can transmute energy fields and energy onto certain molecules and not others. This lets light travel through certain molecules without effecting them much since they may not be effected by the electric or magnetic field. Sound uses the mass it is propagating through to transmit energy and so it inherently vibrates all mass around it regardless of the material.

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Light waves and sound waves are different. Lightwaves are teeny tiny little packets of energy that almost have no mass and can go through certain materials and interact with other materials based off how those materials absorb energy. For example light in the visible spectrum can go through glass carbonate but not wood carbonate.

Sound waves are made from any kind of matter that does have mass. That mass bounces off other masses and your ears record the frequencies of those waves bouncing and creates a perception of sound.

The majority of the process is controlled and purposefully done by the DNA. Your body grows in stages and goes through major changes from embryo, to fetus to infant, toddler teenager etc. Your body is developing mostly as intended. As we age though, our cells' DNA slowly breaks down over time and as cells continue to use DNA to perform lifer functions like making proteins or cell reproduction, the DNA is compromised over time and the cells cannot perform their functions as well and slowly perform worse until they start causing stress on cells around them and so on until a major bodily function fails.

First, the hypothesis we use commonly says that natural selection occurs when there is competition amongst the population so if we as a population are competing for these medical advancements then semantically no, evolution is not necessarily stopped because a population gets technology. There are a few faucets to evolution but Darwin's null hypothesis says that if there's competition then there can still be evolution occurring.

Logicaly arguing, at first, any change we make to the environment would be to benefit us more in the short term. Think antibiotics for example. At first we cured lots of diseases but in the future we will have made more deadly ones. The more changes we make to the environment the more it will change and assuming we evolved to do well in that environment, the changes we make might seem good immediately but will have unforeseeable effects which may be more detrimental to us in the long-term. Then again, maybe they wont be because that depends on all the other decisions living creatures are seemingly making in spite or simply jest of the laws of physics.

Still, humans are nature and we are just a small part at that(no matter how much our egos tell us we are the biggest, our egos make us human, they do not part us from nature). A huge catastrophe will cause a special evolutionary event I think termed "bottlenecking" or I don't know the academic terms if you look type in: "bottlenecking, catastrophe and evolution" you should get some textbook material that comes up to explain how that effects the population specifically.