I understand that it is an evolutionary process, and in one of my previous posts I have even cautioned that the time scale for an evolutionary process is millions of years. My question is simple, what environmental factors lead to these evolutionary changes in our body structures? Are they those that directly interact with our bodies, or the ones that interact with our minds?Some environmental conditions can modify the DNA controlling the switching of different genes in an organism, but then again, this process is evolutionary.
Sijajibiwa nilichouliza hapo juu!
Any long exposure to extreme conditions (temperatures, scarcity of food, predators, change in ecosystem) that endanger animal's survival.My question is simple, what environmental factors lead to these evolutionary changes in our body structures?
It doesn't matter whichever comes firstAre they those that directly interact with our bodies, or the ones that interact with our minds?
Kichuguu Mkuu, ningependakujua kwa mawazo au uhakika wako kuwa baada ya miaka hiyo ya mamilioni ​hao makaburu wa Afrika ya Kusini watakuwa weusi na Negros wa Marekani na Latin Amerika watakuwa weupe? Unadhani au una hakika kuwa genetics inaweza kuathiriwa na climate baada ya mamilioni ya miaka?Uhamiaji uliotokea baada ya ugunduzi wa vyombo vya kusafuiria ndio uliosababisha watu hawa kuchanganyikana; hakukuwa na mtu mweupe kusini ya ikweta. Uhamiaji huo umetokea miaka isyozidi 2000 zilizopita, kipindi ambacho si kifupi sana katika process ya evolution. Makabugeru wamehamia Afrika ya kusini kuanzia mwaka 1600 tu; hicho ni kipindi kifupi sana katika process ya evoltion ambayo inahesabika katika miaka ya mamilioni.
MAMMAMIA;Kichuguu Mkuu, ningependakujua kwa mawazo au uhakika wako kuwa baada ya miaka hiyo ya mamilioni ​hao makaburu wa Afrika ya Kusini watakuwa weusi na Negros wa Marekani na Latin Amerika watakuwa weupe? Unadhani au una hakika kuwa genetics inaweza kuathiriwa na climate baada ya mamilioni ya miaka?
Exactly, that is the basis for the theory of evolution; I totally agree with you.Any long exposure to extreme conditions (temperatures, scarcity of food, predators, change in ecosystem) that endanger animal's survival.
It doesn't matter whichever comes first
Unfortunately not in this case. We are capable of changing the environment to fit what our minds want. That is why we developed all technologies that we have today in response to what our minds ware affected by the environment.
That is usually a temporal logic my friend, in evolutionary time our genes (read bodies) win hands down, every time, to determine what's best for us based on the amount of data collected over millions of years down the line.
I understand that it is an evolutionary process, and in one of my previous posts I have even cautioned that the time scale for an evolutionary process is millions of years.
Who counted all those millions of years? Is there any human being that lives that long?
Nyani; don't turn yourself to be among those simple minds of the Thomas type. You got to wake up and learn to see things through a different lens. In science we always start where others left unless there is a strong reason to revisit earlier information.
In the present case you have to have strong scientific reasons to discredit the theory of evolution rather than asking who counted the years.
Less than twenty years ago, we used to treat Malaria by just a single dose of 4/2/2 chloroquine tables; Plasmodium parasites evolved and their bodies developed ways to survive within the chloroquine infested environment. Today, as you and everybody knows, Chloroliquine is no a longer a threat to Plasmodium. That is a result of the theory of evolution!
huhitaji kuishi miaka 1000,000
kujua nini kilitoa 1M years ago
Swaali zuri sana;
Kwanza fahamu kuwa kuna mbilikimo wa aina mbili: mbilikimo wa asili (pygmy) na mbilikimo wa ugonjwa (dwarf). Wale wa kongo ni mbilikiko wa asili kwa maana ya kuwa maumbile yao ni asili yao na yanatokana na mazingira yao ya asili. Umbilikimo wa aina hii ni hereditary kwa maana ya kuwa huzaliwa na mbilikimo pia. Ni kama ambavyo maumbile ya asili ya waachina yalivyo tofauti na maumbile ya asili ya wazungu, na pia wachina huzaliwa na wachina tu.
Kuna mbilikimo wa aina nyingine ambao wanapata matatizo ya mwili kushindwa kutengeneza hormones zinazohitajika mwili kukua, na hivyo kubaki na umbo la kitoto maisha yao yote; hawa wanajulikana kama drwafs. Mbilikimo wa aina hii huweza kutokea katika familia yoyote ile, wazazi wawili warefu wanaweza kuzaa mbilikimo wa aina ya dwarf.
Theories zinazonyesha kuwa evolutionary process iliyosababisha waafrika wakawa na ngozi nyeusi kutokana na mazingira ya joto la tropical, ndiyo pia iliyosababisha watu waliokuwa wakiishi kwenye misitu mizito kama vile Kongo kuwa wafupi kwa vile miili yao ilikuwa inakosa mwanga wa jua kutengeneza vitamin D; kwa hiyo miili yao ikawa haiwezi ku-absrob calcium ya kutosha, jambo liliosababisha wawe na mifupa midogo na hivyo kuwa na miili midogo. Misitu ya Kongo ndiyo yenye mbilikimo wengi wa aina hiyo ikifuatiwa na misitu ya Amazon huko Brazili. Kuna sehemu nyingine za dunia kama Papua New Guinea na Australia ambako pia kuna mbilikimo waliotokana na misitu mikubwa iliyokuweko maeneo hayo.
Asili yao ni kwenye misitu. Ni kama ambavyo asili ya waafrika ni kwenye bara la Afrika lakini leo wapo wengi wanaishi Ulaya, Amerika na huko Uchina.kwanini unasema wanapatikana kwenye misitu? wao ni wanyama wa pori? if yes, mbona wapo town tunakula nao story? nisaidie hapo brother
I see that there is no end along your line of arguments; you seem to be among those who put their fingers in a corrosive liquid to verify that it is indeed corrosive. Did you hear about this guy who did not believe any theory about effects of snake bite venom?That to me only applies to things that make practical sense and not the ones that so outrageously strain credulity. Millions of years....are you kidding me? And how many millions - 10, 20, 30, 400....?
I disagree. If something doesn't make sense I don't have to provide anything in order to discredit it.
My line of questioning should suffice.
Who counted all those millions of years? Who was there throughout those millions of years to actually establish that time scale?
What if we just found a better way to fight those parasites and not because they evolved?
And what evidence is there that establishes their evolution as opposed to our advancement in medical science?
Mwalimu Kichuguu umekula kona jirani?