In our solar system, the sun is our closest star and it’s huge. Around 1 million earths can fit inside the sun to show you that perspective.
The sun glows so brightly because of nuclear fusion. Nuclear fission is a certain type of reaction and it releases enormous amounts of energy. Very small particles of mass create thermal energy.
The citric acid cycle is the second step of cellular respiration also known as the Krebs cycle. By the end of this reaction 2 atp will have been formed.
The Earth's layers in order from the center to the surface would be The Inner Core, The Outer Core, The Mantle, The Asthenosphere, The Lithosphere, then The Crust. Hope this helped!
-TTL
Answer:
"Survival of the fittest" is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection. The biological concept of fitness is defined as reproductive success. Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce. Also called Darwinian theory, it originally included the broad concepts of transmutation of species or of evolution which gained general scientific acceptance after Darwin published On the Origin of Species in 1859, including concepts which predated Darwin's theories. English biologist Thomas Henry Huxley coined the term Darwinism in April 1860.
