Which one of the following is not a fossil fuel?

What is the process where carbon enters the soil from dead plant or animal matter?

Select the two processes that are opposites of each other

Which process does not produce carbon dioxide?

Which one of these adds carbon dioxide to the atmosphere?

When humans burn fossil fuels, most of the carbon quickly enters the ___________ as carbon dioxide.

In the carbon cycle, plants take in __________

What are the two main forms of carbon in the atmosphere?

Which carbon sink holds the most carbon?

Why are coal, oil, and gas considered non renewable?

An igneous rock forms by...

Lava from a volcano forms ___ rock.

The lava from the volcano in the Fagradals Mountain will solidify to form an ___ rock.

The magma from the volcano in the Fagradals Mountain that does not make it to the surface and solidifies below ground will be ____ rock.

Rocks that form as a result of layering and pressure are ___ rocks.

The limestone of Kansas is an example of a ___ rock.

When a moving glacier heats and pressurizes a rock, the rock becomes a ____ rock.

A metamorphic rock is changed ____.

Oil is generally found in ___.

Which type of rock is not directly dependent on pressure for formation?

Humans have an impact on the rock cycle.

What type of remains make up most fossil fuels?

Oil is formed from ___.

Coal is formed from ___.

Which type of rock is directly dependent on pressure but NOT heat for formation?

Humans are increasing the amount of carbon in the atmosphere by ___.

Where does the energy from fossil fuels originate?

Which takes more pressure to form?

Which of the following adds carbon from the atmosphere?

Human activity ___ the amount of carbon stored in carbon sinks.

Though it does not hold the most carbon, where is carbon stored the longest?

Carbon compounds in the atmosphere keep Earth warm and are responsible for warming trends.

Do plants absorb more CO₂ or release more CO₂?

Does CO₂ dissolve easily in water?

Does CO₂ dissolve more in warm or cold water?

Phytoplankton use CO₂ for making calcium carbonate shells and ___.

When limestone is _____, it releases carbon dioxide (CO₂) and carbonic acid.

What process started making the amount of carbon dioxide in the atmosphere climb at an alarming rate?

Thawing permafrost is releasing carbon dioxide and methane due to the ___ of plant material.

Granite is an example of...

Marble is an example of...

Pumice is an example of

How do animals get carbon?

Which of the following are fossil fuels?

If the plant population decreased, the amount of carbon in the atmosphere would ____________________.

When molten rock cools slowly, the crystals will be...

Which 2 ways break apart nitrogen gas so plants can access nitrogen?

How does nitrogen get back into the atmosphere?

How do phosphates get into soil for plants to use?

Which cycle does not involve the atmosphere?

Which 2 elements are in fertilizer?

Why isn't carbon added to fertilizer?

Which energy form relies on moving electrons?

Which renewable energy would not be reasonable in a desert?

Which renewable energy releases the most carbon (close to the level of fossil fuels)?

Which hydropower is the worst for the environment?

How does nuclear energy work?