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There is no specific number of years as it can vary depending on the location and the specific aspect being considered. However, in general, many scientists agree that the Earth was cleaner in the past before industrialization and widespread human activity began to significantly impact the environment.
What else can I help you with?
How many times does pangaea occur on Earth?
Pangaea occurred once in Earth's history, during the Permian and Triassic periods, approximately 335-175 million years ago. It was a supercontinent where most of Earth's landmasses were joined together.
Which plants are smaller than earth?
There are many planets smaller than Earth, including Mercury, Mars, and Venus. While these planets vary in size, they are all smaller than Earth in terms of diameter and mass.
How much hotter is the earth than it was forty years ago?
The Earth is approximately 1 degree Celsius hotter now than it was 40 years ago. This increase in temperature is primarily attributed to human activities that release greenhouse gases into the atmosphere, such as burning fossil fuels and deforestation.
According to creationism how old is the earth?
According to creationism, the Earth is less than 10,000 years old, and is usually found to be around 6,000 years old. This results from an interpretation of Biblical genealogies.
The idea that the processes that formed the earth have taken more than thousands of years instead of quickly is known as?
The idea that the processes that formed the Earth have taken more than thousands of years instead of quickly is known as the principle of uniformitarianism. This principle suggests that geological processes occurring today have operated similarly over long periods of time to shape the Earth's surface.
Why is evaporated water cleaner than it was on earth?
The impurities are not evaporated with water.
Is solar energy better than fuel?
Yes,it is cleaner than fuel. It's better for the earth.
How many times cleaner are rats than dogs?
At least 75x cleaner according to my vet.
Which planets have years longer than one earth year?
Jupiter, Saturn, Uranus, and Neptune have years longer than one Earth year. Jupiter's year is about 12 Earth years, Saturn's is about 29 Earth years, Uranus's is about 84 Earth years, and Neptune's is about 165 Earth years.
Why is well water cleaner?
Cleaner than what . - Well water is often, but NOT always cleaner than surface water. Always get a lab test to ensure water is fit for humans, DON'T just assume it is, your family's health is at risk.
How many years longer have dinosaurs lived on earth than humans?
Dinosaurs - about 150 million years. Humans - about 1 million years.
Which planets have a year longer than the Earth?
All the planets further away from the sun than Earth is
Are goats cleaner than dogs?
no. dogs are cleaner than goats.
How many earth years is mercury to revolve the sun?
Mercury revolves around the sun in 88 earth days. More than four times in one earth year.
Why fossil fuel runs out?
There is only so much of it in the earth, it takes millions of years to make more and we are using it up at a much faster rate than the earth is making it. At some point it there just won't be enough to go around. Fortunately, we have hundreds of years of fuel left while we search for safer and cleaner alternatives.
How many years were dinsoaurs on earth?
Scientists believe dinosaurs roamed the earth for roughly 180 million years, longer than any other creature on earth. The few dinosaurs that survived the mass extinction lived into the Jurassic period.
How long was dinsaurs on the Earth?
they were on earth for more than 1,000,000 years ago
