Casually Explained is a great video series, here is Casually Explained explaining evolution. I suggest checking out the overarching YouTube Channel.
Biology (or Biological Science) is the study of living organisms.
Charles Darwin came up with the idea of natural selection, but he didn’t coin the phrase “survival of the fittest”, that was Herbert Spencer in 1864’s Principles of Sociology.
We explain how to lose body fat from a scientific standpoint, and offer simple science-based advice on dieting, weight loss, and exercise.
Carbohydrates (especially simple ones like sugars) “spike” blood sugar (glucose) levels. This triggers insulin production, causes hunger, and primes the body for weight gain.
Studies have shown there is no single determinant of sex, gender, or sexuality. Thus, a binary distinction of “male or female” fails to describe a wide range of humans in practice.
Nettie Stevens and Edmund Beecher Wilson independently discovered the chromosomal XY sex-determination system (that males have XY and females have XX sex chromosomes).