Question

How does Earth support life?

Answer 1

Hint: It is the right distance from the Sun, it is secure from damaging solar radiation by its magnetic field, it is kept warm by a sequestering atmosphere, and it has the right chemical components for life, together with water and carbon. The progressions that form the Earth and its environment continuously cycle elements through the planet. This cycling supports life and leads to the creation of the mineral and energy resources that are the groundwork of modern technological society.

Complete answer:
Earth may be the only planet in the solar system which sustains life. There are a number of explanations which favor Earth to support life starting from microorganism to humans, among the most imperative reasons are:
OUR LOCATION IS FAR FROM MANY HAZARDS: The solar system is securely settled in a safe harbor between major spiral arms, and its nearly circular orbit helps it avoid the galaxy’s perilous inner regions. There are relatively few stars near the sun, reducing the risks to Earth from gravitational tugs, gamma-ray bursts, or collapsing stars called supernovae.
OUR SUN IS A STABLE AND LONG-LASTING STAR: Stars more gigantic than the sunburn hotter and typically don’t live long enough for planets to grow life. Less enormous, younger stars are often unhinged and are susceptible to damaging their planets with eruptions of radiation.
WE’RE AT JUST THE RIGHT DISTANCE FROM THE SUN: Earth orbits in the so-called Goldilocks zone, where the planet obtains enough energy to let water to subsist as a liquid on its exterior. Too far, and the essential compound stays locked up as ice. Too close, and the water would quickly disperse into the atmosphere.
WE HAVE THE RIGHT MATERIAL TO HOST A DYNAMIC CORE: The intergalactic cloud of gas and dust that gave rise to Earth held enough radioactive components to influence a roiling core for billions of years. This generates a magnetic field that defends the planet from hazards like solar flares.
WE HAVE A BIG MOON TO STABILISE OUR AXIAL WOBBLE: Earth is tilted with respect to the sun and teeters as it spins. This tiny wobble can shift the climate from hot to icy every 41,00 years – and might vary more without the moon’s stabilizing pull.
WE HAVE AN OZONE LAYER TO BLOCK HARMFUL UV RAYS: Ancient plant-like organisms in the oceans added oxygen to the atmosphere and created a high-altitude layer of ozone that shielded early land species from lethal radiation.

Note: Just as circumstances on Earth have altered considerably over time, so have circumstances on other planets. When astrobiologists appraise a planet, they look not just at its present circumstances, but for signals that it could have been liveable in the past.