Sensei

Ants do not have a brain capable of learning many things, but they still have agriculture. https://en.wikipedia.org/wiki/Ant–fungus_mutualism "There are five main types of agriculture that fungus-growing ants practice:[5] lower, coral fungi, yeast, generalized higher, and leafcutter agricultural systems. Lower agriculture is the most primitive system and is currently practiced by 80 species in 10 genera.[6][7] Coral-fungus agriculture is practiced by 34 species by a single derived clade within the genus Apterostigma.[7]"

Human mother is giving milk only when she was pregnant.. and gave birth to a newborn.

Steady growth of anything on the planet with limited size, limited area, limited resources, is not possible to sustain forever.

Newly born mammals are drinking mother milk. Human mother is giving milk only when she is pregnant. Humans noticed this relationship on themselves. Prehistoric humans noticed that there are other milk drinking animals such as e.g. sheep, goat, donkey. So once they caught them, killed at first, tried to get their milk and found it is also drinkable. But milk is gone if female is not pregnant (or dead). So had to release them (temporarily) or caught males to impregnate their previously caught females. Farm animals must be feed, or will die. so there was need to find source of food for them. Step by step, from gatherer and hunter culture to agriculture. Production of blood is insignificant (inefficient) in comparison to production of milk by mammals. "A dairy sheep will produce at most, 1100 lbs of sheep milk during a 180 day lactation. They can produce anywhere from 400 to 1100 pounds during their entire lactation." 1100 lbs is ~499 kg. 499 kg / 180 days = ~ 2.77 kg/day average.

Then show your references.. Governments could have such kind of data: they know who is father and mother of almost any citizen (at least officially, on "paper"), and at what age, they have/had offspring, and what happened with them during their lifetime. Whether these people ended up in e.g. psychiatric hospital, and how much of them, and how it correlates (or not correlates) with parent's age. From schools and universities it is possible to estimate their education level (at least on "paper").

Animals speak languages which human don't understand.. They are not so sophisticated as human language, but still they carrier messages. About food sources, about predators, about life.

Physical calculators are reporting error when there is e.g. division by 0, or sqrt( negative number ). You can try on-line calculators. Like e.g. Wolfram Alpha: https://www.wolframalpha.com/ Your equation is missing parenthesis. e can be interpreted as Euler's number https://en.wikipedia.org/wiki/E_(mathematical_constant) but it also can be interpreted as exponent in IEEE floating-point standard.

- reactants should be in the right proportions - reactants should be shredded to tiny powder and carefully mixed together

That's media's job to highlight ludicrous ideas and laws-to-be, gather independent experts opinions and bring them to bigger public attention..

Isn't easier to use e.g. Firefox private window.. ? It's not storing cookies after closing application..

How many times did you use cookies from website code.. ? There is possible to set expiration date.. http://php.net/manual/en/function.setcookie.php "expires (...) If set to 0, or omitted, the cookie will expire at the end of the session (when the browser closes). " To have cookie non-temporary or non-volatile programmer has to set ridiculous high expiration date (e.g. in years)..

..because of ridiculous regulations made by incompetent politicians in EU forcing web designers to ask user to allow cookies.. ? ...and remembrance of this setting is stored in.. cookies (it's only sensible place to store such things).. If somebody would answer "no, I don't want cookies ever!" would be asked this question "forever", as there is no other place to store such things than cookies (without registration and logging, which... also needs cookies to store session id).. If competent programmers would become politicians they would never make such law, as they would since the beginning see ridiculousness of it.. "Cookies" = "temporary volatile local website data" ps. Yes, I have the same on smartphone browser. I am not registered nor logged on it. On computer I am logged as user.

You wanted reference, I gave you..

If you shoot a bunch of UV photons toward e.g. Hydrogen gas, at least some of them will be absorbed by Hydrogen, and new one photons will be emitted with lower energies. It all depends on photons initial energy, and quantity of photons, and quantity of possible collisions photon-medium, whether human-eye will be able to see in visible spectrum reemitted by material photons.

https://en.wikipedia.org/wiki/Terrestrial_gamma-ray_flash "In 2009, the Fermi Gamma-ray Space Telescope in Earth orbit observed intense burst of gamma rays corresponding to positron annihilations coming out of a storm formation. Scientists wouldn't have been surprised to see a few positrons accompanying any intense gamma ray burst, but the lightning flash detected by Fermi appeared to have produced about 100 trillion positrons. This was reported by news media in January 2011, and had never been previously observed.[27][28]" ..also search for "positron" and "annihilation" in the above article references..

Electrons with high kinetic energy (>1.022 MeV) during collision with matter will create pair of yet another electron-positron, or during collision will emit high energy photon, which will pair-produce them. Annihilating electron-positron pair will make new gamma photons. You can make them even in Van de Graaff generator. 20 MV the largest generator was used to fuse couple atoms. Newly produced atom can be excited and emit gamma rays.

Think abstractly. In such riddles there is often play on words. e.g. "I become second", second might means it's something correlated with time. 1 second, 2 seconds etc. "chop off my head", "cut me front", "cut me back", might means removing digits from sequence of numbers, or mathematical equation/function (rational function?), from which we are removing some parts. e.g. function y = a/b "chop off my head" would mean getting rid of "a" variable, which is on the top of equation ("head"). b number could have format e.g. cdefg, "cut me front or back" -> remove c or g digits. "cut me front and back" 2nd time -> remove the right digits remaining from previous step.

"color" is layman interpretation of energy/frequency/wavelength of photon, particle of light. https://en.wikipedia.org/wiki/Photon If photons have low energies, they are in radiowave, microwave, infrared spectrum. Invisible for human eye. But detectable by specially designed instruments. If photons have energies between approximately 1.8 eV (which corresponds to 700 nm wavelength) and 3.1 eV (400 nm wavelength), human eye is detecting them and brain interpreting as various colors. Red, yellow, green, aquamarine, blue, violet, and their intermediates. Colors of rainbow. Visible spectrum of light. https://en.wikipedia.org/wiki/Visible_spectrum "white color" is almost uniform mixture of photons with various energies without any significantly dominating above the others. Different materials are absorbing photons with different energies. The most often, high energy photon is absorbed, and one or couple new one with lower energies are emitted to environment (photons that were completely absorbed increase internal energy of object which absorbed them). Rarely couple lower energy photons are absorbed and one higher energy photon is emitted. https://en.wikipedia.org/wiki/Absorption_(electromagnetic_radiation) https://en.wikipedia.org/wiki/Emission_spectrum Objects with internal energy emit photons correlating to temperature of object. It's called thermal radiation. https://en.wikipedia.org/wiki/Thermal_radiation Layman says/thinks "I see red light". Quantum physicist says/thinks "I see photon with 1.9 eV energy". Your initial question should be rephrased to "are fundamental quantum particles emitting photons, and if yes, with what energies?"

If writer, 2D/3D graphician, blogger, vlogger, etc. etc., has many visitors on his/her website, earns money from ads, supporters and sponsors, he/she can pay for electricity.. and you have "transfer of power energy through HTML website"..

...mercifulness is praiseworthy...

Shell stock prices at the beginning of October 2018 were even for 30 euros, in the day you wrote above words costed 28.2. After 15% discount, it's ~26 and ~24.5 respectively. Current (today) price of Shell stocks is 26.32 euros... The trend is downward... Looks like entire discount vanished.. What was absolute price per stock you bought them?

Damage to structure of construction due to repeated heating and cooling can be permanent.

Temperature on the Moon varies with latitude. There will be different minimum and maximum on pole than on equator. So, you should start from looking up what are temperature minima and maxima at latitude you're interested in. Internet mentions -173 C ... +127 C. NASA moon temperature map: https://www.nasa.gov/mission_pages/LRO/multimedia/lro-gal-diviner.html Metals expand and shrink with temperature. So, you should look up specific material thermal expansion table. It must be taken into account even in human-made on the Earth buildings and constructions like e.g. bridges, because of variation of temperature in winter and summer.

Ordinary doctor can help just a few people per day. How many is it in year? How many is it in lifetime? Not that many. Scientist can help millions or billions of people. Working in lab, helping making new medicament. Genetic diseases, inherited from parents and predecessors, in many cases, can be eliminated just by using in-vitro technique. Healthy partner + unhealthy partner have 50% chance to give birth to child with genetic disease. Embryo can be checked whether is inheriting damaged genes, or good one, and only healthy embryo will be used, releasing family from genetic disease once for all, in future generations.

Which equation has the all supplied data in this question: distance traveled, time and acceleration? When you will remind this equation, you will have to transform it a bit, and plug the all data, and voila, you have the answer.