#809 What do worms do?
What do worms do? They break down organic matter in the soil and release the nutrients in their waste. Earthworms may all look the same to us, but there are…
What do worms do? They break down organic matter in the soil and release the nutrients in their waste. Earthworms may all look the same to us, but there are…
How have sea levels changed over time? Over the last 542 million years they have varied from 130 m lower than their level today to a theoretical 300 m higher…
Do other planets have tectonic plates? In our Solar System, Earth is the only planet with tectonic plates, but in other solar systems there will probably be planets the same…
Watch this on YouTube Is Earth an open or closed system? It is both. For some things it is open and for others, it is closed. Earth is an open…
How can the inner core of the Earth switch rotation? Because it is separated from the solid mantle and can rotate at a different speed. The Earth has four layers.…
I learned this today. Mars could be terraformed, but it would require more money than any government would be able to spend. Terraforming is the process by which an uninhabitable…
I learned this today. The moon is moving away from Earth at a rate of 3.78cm per year, but there will be a time when it will stop moving away…
I learned this today. The Earth wouldn’t really have seasons if it wasn’t tilted on its axis, and that is thanks to the moon. The Earth is tilted at an…