Hits: 1162

• Video Field: https://www.youtube.com/watch?v=iKPw6-cTpIA

We're for all- ALL are for us for the greater interest of Humanism-Truth-Facts-Friendship-Unity-Participation including Physico-Mental Sound Health  with Spirituality enrichment through ''TOTAL HEALTH SOLUTION'' to a Well-furnished GOALofTruth alloted for all in real sense ;

From wikipedia & other reliable sources ( Poets, Writers, Thinkers, Researchers, Free Lancers, Philosophers, Theologists, Scientists, Orators, Sociologists and Photographers +Artists-Musicians & etc.) we can learn as follows : 

''Sex is the trait that determines whether a sexually reproducing animal or plant produces male or female gametes.^[1][2] Male plants and animals produce smaller mobile gametes (spermatozoa, sperm, pollen), while females produce larger ones (ova, often called egg cells).^[3] Organisms that produce both types of gametes are called hermaphrodites.^[2][4] During sexual reproduction, male and female gametes fuse to form zygotes, which develop into offspring that inherit traits from each parent.

Males and females of a species may have physical similarities (sexual monomorphism) or differences (sexual dimorphism) that reflect various reproductive pressures on the respective sexes. Mate choice and sexual selection can accelerate the evolution of physical differences between the sexes.

The terms male and female typically do not apply in sexually undifferentiated species in which the individuals are isomorphic (look the same) and the gametes are isogamous (indistinguishable in size and shape), such as the green alga Ulva lactuca. Some kinds of functional differences between gametes, such as in fungi,^[5] may be referred to as mating types.^[6]

A living thing's sex is determined by its genes. Most mammals have the XY sex-determination system, where male mammals usually carry an X and a Y chromosome (XY), whereas female mammals usually carry two X chromosomes (XX). Other chromosomal sex-determination systems in animals include the ZW system in birds, and the X0 system in insects. Various environmental systems include temperature-dependent sex determination in reptiles and crustaceans.''^[7]

Read more ...

Hits: 1053

• Video Field: https://www.youtube.com/watch?v=iKPw6-cTpIA

We're for all- ALL are for us for the greater interest of Humanism-Truth-Facts-Friendship-Unity-Participation including Physico-Mental Sound Health  with Spirituality enrichment through ''TOTAL HEALTH SOLUTION'' to a Well-furnished GOALofTruth alloted for all in real sense ;

From wikipedia & other reliable sources ( Poets, Writers, Thinkers, Researchers, Free Lancers, Philosophers, Theologists, Scientists, Orators, Sociologists and Photographers +Artists-Musicians & etc.) we can learn as follows : 

                                             HUMAN Population

''In demographics, the world population is the total number of humans currently living. It was estimated by the United Nations to have exceeded 8 billion in November 2022. It took over 200,000 years of human prehistory and history for the human population to reach one billion and only 219 years more to reach 8 billion.^[3]

The human population experienced continuous growth following the Great Famine of 1315–1317 and the end of the Black Death in 1350, when it was nearly 370,000,000.^[4] The highest global population growth rates, with increases of over 1.8% per year, occurred between 1955 and 1975, peaking at 2.1% between 1965 and 1970.^[5] The growth rate declined to 1.1% between 2015 and 2020 and is projected to decline further in the 21st century.^[6][7] The global population is still increasing, but there is significant uncertainty about its long-term trajectory due to changing fertility and mortality rates.^[8] The UN Department of Economics and Social Affairs projects between 9 and 10 billion people by 2050 and gives an 80% confidence interval of 10–12 billion by the end of the 21st century,^[2] with a growth rate by then of zero.^[7] Other demographers predict that the human population will begin to decline in the second half of the 21st century.^[9]

The total number of births globally is currently (2015–2020) 140 million/year, which is projected to peak during the period 2040–2045 at 141 million/year and then decline slowly to 126 million/year by 2100.^[10] The total number of deaths is currently 57 million/year and is projected to grow steadily to 121 million/year by 2100.^[11]

The median age of human beings as of 2020 is 31 years''.^[12]

Read more ...