Well, without the sun, we wouldn't exist. So that's probably the biggest one. Otherwise, the Earth is a very balanced ecosystem, and when the solar output of the sun varies even slightly, the effects can be humongous.
When the Sun burns out or before that if there is an object in space that impacts the Earth
Martian meteorites were blasted of of Mars by enormous asteroid impacts and ended up orbiting the sun. Some of them eventually intersected Earth's orbit.
This is because it is the center of our solar system. Many items orbit around the sun. Also, it is unmistakable and almost always visible from some point on the Earth. There are no other objects in the sky with such a large impact on the Earth.... unless an object from the sky impacts the Earth (like an asteroid).
The ozone layer acts as a shield on the earth. It protects us from the harmful UV rays of the sun.
The Earth's axial tilt of 23.5 degrees is believed to be a result of historical impacts during its formation. This tilt is responsible for the changing seasons as the Earth orbits the Sun.
Some planets are too far from the Sun, and some are too close to the Sun, while planet Earth has the perfect spot for life.
When Earth's atmosphere traps energy from the sun, it causes an increase in temperature on the surface of the Earth, known as the greenhouse effect. This can lead to global warming, climate change, and various environmental impacts.
They can damage animals habitats. When they erupt, the smoke released can block out the sun, preventing plants from growing.
The Sun's light (all forms of radiation from radio to heat to light to xrays are electromagnetic radiation) is radiated outward in pretty-much equal measure in all directions. Some tiny part of the Sun's radiation impacts the Earth, warming the planet, causing weather, plant growth and sunburns.
NO! It is always further away from the Sun than Neptune which is 30 further from the Sun than Earth and minor planet Apophis. Apophis will come very close to Earth, but it is just 270 m in diameter... If it impacts Earth it causes just a tsunami if it hits the sea.
If Earth moved closer to the sun, temperatures would increase significantly, leading to the melting of ice caps, changes in weather patterns, and potential harm to ecosystems and biodiversity. Life as we know it would be threatened due to the extreme heat and its impacts on the environment.
The suns energy when it reaches the earth's atmosphere encounters earth's plasma and three things happens. Some of the energy is reflected , some is absorbed and the rest is transmitted to the earth.