Biochemical Cycles

Which process moves carbon stored in fossil fuel into the atmosphere?

• When fossil fuels are burned, carbon enters the atmosphere as carbon dioxide.

• The denitrifying bacteria turns the fossil fuel into carbon dioxide gas.

• Decomposers convert the fossil fuels into greenhouse gases like carbon dioxide.

• The fossil fuels react with the soil to produce carbonates and carbon dioxide.

Tags

NGSS.MS-PS1-2

What number would represent photosynthesis in this
diagram?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What converts nitrogen into a useable form for plants and animals?

• bacteria

• fungi

• rain

Tags

NGSS.MS-LS2-3

When nitrogen gas is turned into a form (nitrates) that plants and animals can use is called 

• Combustion

• Photosynthesis

• Decomposition

• Nitrogen Fixation

The movement of a particular chemical through biotic and abiotic parts of an ecosystem

• chemical dispersion

• biogeochemical cycling

• ecological migration

• biological translocation

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

​ ​ (a)   is when bacteria, microbes, and other decomposers convert waste and dead biomass into NH3 and return it to the ​ (b)   .

• Ammonification

• soils

• Nitrification

• atmosphere

• Assimilation

Tags

NGSS.MS-LS2-3

​ (a)   is the conversion of NH4 into nitrite (NO2) & then nitrate (NO3) by ​ (b)   .

• Nitrification

• soil bacteria

• Denitrification

• Assimilation

• plants

• animals

Tags

NGSS.MS-LS2-3

What is one of the most important processes that removes carbon from the atmosphere? 

• photosynthesis

• cellular respiration

• erosin

• soil respiration

Tags

NGSS.MS-LS1-6

How nitrogen is "fixed" into useable form for plants

• through action of bacteria

• through lightning

• through action of bacteria & lightning

• through photosynthesis

Organisms that break down dead plants & animals and release nitrogen back into atmosphere...

• bacteria

• plants

• animals

• producers

Tags

NGSS.MS-LS2-3