Is carbon ever created or destroyed?
You said burning makes new carbon. The atoms were already here; burning just moves stored carbon back into the air.
Try this lessonFind the step that makes it click.
Pick a topic in math, science, chemistry, or writing. Try an example, get a clue, and practise at your pace.
No account or card needed. Practice answers stay on this page and aren’t saved.
1 lesson for “The carbon cycle”
Also close
Can one kind of rock become another?
You said granite stays granite forever. Given enough time, granite can become sediment, or metamorphic rock, or magma, and back again.
Try this lessonWhere does rain come from, and where do puddles go?
You said clouds are water vapor. Vapor is an invisible gas; clouds are made of tiny liquid droplets that vapor turned into.
Try this lessonWhere does a growing plant's mass come from?
You said the soil feeds the plant. Soil holds water and minerals, but most of the tree's wood is built from carbon in the air.
Try this lessonIs breathing the same as cellular respiration?
You said respiration happens in the lungs. The lungs move air in and out; the useful energy release happens inside every one of your cells.
Try this lessonWhich prefix: mono, di, or tri?
Carbon dioxide and carbon monoxide both start with carbon. The prefixes are the only thing telling them apart, so get them right.
Try this lessonTry a step. See what clicks.
Work through an example, ask for a clue when you need one, then try a new question on your own.
Browse by subject
All of math, science, chemistry and writing lessons or search across the whole library above.
Learn by trying
Fill in one step at a time and check your answer. Need help? Tap “Give me a clue.”
Treat these examples as a starting point for a conversation, not as a replacement for your teacher’s guidance.
Need help with your own question? See how the family service works