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Page 12

Q0295

WonderScience

When matter and antimatter meet, they annihilate, releasing energy.

Antimatter is the mirror partner of ordinary matter: same mass, opposite charges. In the early universe, matter and antimatter should have been created in nearly equal amounts; when pairs met, they annihilated into energy. The puzzle is why a tiny excess of matter survived. That leftover fraction became atoms, stars, planets and us, and the origin of this matter-antimatter imbalance is still one of modern physics' great questions.

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Q0296

WonderScience

Science is not a pile of final answers; it is a disciplined method for testing claims and becoming less wrong over time.

A scientific claim must risk being checked against evidence. That is why better measurements, failed predictions and repeated tests can change what people accept as true. Its global value is not certainty; it is a shared way to correct error without relying only on authority, tradition or charisma.

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Q0297

WonderScience

Your skin is not a wall; it is a living organ that senses, protects, regulates temperature and speaks constantly with the immune system.

Skin keeps water in, blocks many threats, helps control heat and carries nerve endings that read pressure, pain and temperature. It also signals with immune cells when the outside world gets through. The ordinary surface you wash every day is therefore a border, sensor and repair crew at once.

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Q0298

WonderScience

Red blood cells have no nucleus, leaving more internal space for haemoglobin, the protein that carries oxygen around your body.

Most human cells keep DNA inside a nucleus. Mature red blood cells are different: they eject that nucleus, become flexible discs and pack themselves with haemoglobin. The trade-off is elegant and ruthless — they cannot repair themselves like ordinary cells, but they can squeeze through tiny vessels and deliver the oxygen every organ depends on.

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Q0299

WonderScience

The human heart has its own electrical rhythm, which is why it can keep beating briefly outside the body under the right conditions.

A heartbeat is not simply a command from the brain. Special pacemaker cells generate electrical signals that spread through the heart muscle and coordinate each squeeze. That local rhythm is why transplant teams can preserve a donor heart for a limited time — and why everyday life depends on a tiny electrical order you never hear.

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Q0300

WonderScience

Your lungs contain hundreds of millions of alveoli, tiny air sacs that create a large surface for oxygen and carbon dioxide exchange.

Alveoli turn the lungs from simple balloons into a vast exchange surface folded inside the chest. Oxygen passes into blood there, while carbon dioxide leaves. Every calm breath depends on architecture too small to notice: survival built from millions of microscopic rooms.

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Q0301

WonderScience

Bones are living tissue, constantly broken down and rebuilt so the skeleton can repair damage and adapt to use.

A skeleton looks fixed in a museum, but inside a living body bone is busy. Cells remove old or damaged mineral; other cells lay down new structure. That is why bones can heal after breaks and grow stronger under repeated load. Strength is not a static object — it is maintenance over time.

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Q0302

WonderScience

Your immune system remembers many past infections through specialised memory cells, helping it respond faster next time.

After an infection or vaccination, some immune cells remain as a living record of what they encountered. If the same threat returns, the response can be quicker and more targeted. This matters everywhere because public health is built on memory at two scales: cells remembering pathogens, and societies remembering how to prevent them.

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Q0303

WonderScience

A fever is not the illness itself; it is part of the body's defence response, raising temperature as the immune system works.

Fever can feel frightening because the whole body changes: heat, aches, fatigue and thirst. But the temperature rise is one way the immune system makes the internal environment less comfortable for some pathogens and more active for defence. The lesson is nuance: symptoms are not always enemies, though severe or persistent fever needs care.

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Q0304

WonderScience

Identical twins can become biologically different over time as environment and epigenetic marks change how shared genes are used.

Identical twins begin with nearly the same genetic sequence, but food, stress, infection, habits and chance can change gene activity over time. Epigenetics is one layer of that difference: chemical marks influence which genes are turned up or down. The so-what is human: biology is inheritance plus history.

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Q0305

WonderScience

Viruses are not fully alive by most definitions, but they can reshape life by moving genes, driving evolution and changing history.

A virus cannot reproduce on its own; it needs a host cell. That is why many scientists place it outside ordinary life, or at least on the boundary. Yet viruses influence evolution, ecosystems and human history on a planetary scale. The lesson is that small things outside our categories can still alter everything inside them.

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Q0306

WonderScience

Bacteria can exchange genes with each other, helping traits such as antibiotic resistance spread across microbial communities.

Bacterial inheritance is not only parent to child. Microbes can pass genetic material sideways through processes such as plasmid exchange. That matters in every hospital and farm because resistance can spread through a community, not just descend through a family line. Evolution sometimes moves sideways.

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Q0307

WonderScience

Antibiotics do not kill viruses. They target bacteria.

Antibiotics attack bacteria, not viruses, so they do nothing for colds or flu — using them needlessly only helps resistant bacteria spread.

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Q0308

WonderScience

Sleep helps consolidate memory, regulate emotion and restore body systems, making rest an active part of learning and repair.

During sleep the brain replays and stabilises some memories, emotional circuits recalibrate and many body systems shift into maintenance. Losing sleep is therefore not just losing hours; it changes the quality of the next day's thinking and feeling. Rest is not the opposite of progress — it is one of its tools.

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Q0309

WonderScience

Dreaming is still not fully understood, but it is linked to memory, emotion and distinctive patterns of brain activity during sleep.

Dreams can be vivid, absurd, frightening or healing, and science has not reduced them to one simple job. They appear alongside sleep stages, emotional processing and memory activity. The useful humility is this: not every important mental event is fully explained yet, but it can still be studied carefully.

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Q0311

WonderScience

Dopamine is not simply a pleasure chemical; it helps the brain learn, predict and pursue rewards before they arrive.

Dopamine often rises around cues, anticipation and prediction errors — moments when the brain updates what is worth doing next. That is why it matters for habits, motivation and addiction, not only enjoyment. The lesson is practical: what you repeatedly chase can train your attention before you notice.

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Q0312

WonderScience

Pain is produced by the nervous system, not simply recorded by the body like a camera filming damage.

Tissue damage can trigger pain, but pain also depends on threat, attention, memory, inflammation and context. That is why two injuries can feel different, and why fear can amplify pain. The point is not that pain is imaginary; it is real precisely because the nervous system creates it to protect you.

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Q0313

WonderScience

Aphantasia is the inability or difficulty some people have in forming mental images.

People with aphantasia can't summon mental pictures — asked to 'imagine an apple', they know it without seeing it. Minds vary more than we assume.

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Q0314

WonderScience

Synaesthesia can make senses overlap, such as seeing colours when hearing sounds or linking numbers with colours.

For some people, a letter may have a colour, a sound may create a visual impression or a number may occupy a mental space. These pairings are usually consistent for the person who has them. The so-what is wonder: perception is not a single human default, but a set of brain-made worlds.

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Q0316

WonderScience

Confirmation bias makes people notice, seek and remember evidence that fits what they already believe.

A belief can become a filter: supportive examples stand out, awkward counterexamples fade or get explained away. This matters in politics, health, money and relationships because intelligence alone does not cancel bias. The antidote begins with a hard question: what evidence would actually change my mind?

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Q0317

WonderScience

The availability heuristic makes recent, vivid or emotional examples feel more common than they really are.

If a story is easy to recall, the brain may treat it as frequent. News, gossip, social feeds and personal scares all exploit this shortcut. It helps us react quickly, but it can distort risk. A calmer question is often better: am I seeing the rate, or just remembering the image?

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Q0319

WonderScience

Crows can use tools, solve puzzles and remember human faces, showing problem-solving ability in a very different brain from ours.

Corvids have bent wires into tools, solved multi-step tasks and recognised people who threatened them. Their brains are organised differently from mammal brains, yet they reach sophisticated behaviour. That matters because intelligence is not one ladder with humans at the top; it is many paths through evolution.

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Q0320

WonderScience

Elephants can recognise themselves in mirrors, a rare sign that an animal may understand the reflection as its own body.

In mirror tests, some elephants use the reflection to inspect marks on their own bodies rather than treating the image as another animal. The result sits alongside their memory, grief-like behaviour and social bonds. It asks humans to widen the circle of minds we take seriously.

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Q0321

WonderScience

Whales and dolphins use complex sound patterns to communicate through water, where sound travels far better than light.

Clicks, whistles and songs can help with navigation, hunting, social contact and identity. In dark or murky water, sound becomes distance, presence and relationship. The global relevance is simple: noise pollution is not just background for marine life; it can interfere with the medium they depend on.

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