Cycles of Matter Flashcards
Oxygen, Carbon, Hydrogen, Nitrogen, Phosphorus, Sulfur are six common _______ common to all organisms.
elements
What contains Carbon in the form of gas(Carbon dioxide)
Air
Plants and other photosynthetic organisms remove carbon dioxide from the air during
photosynthesis(Carbon is consumed)
These organisms use Carbon to make ____ ________
and store them.
food molecules
Consumers break down food molecules to obtain
energy
Consumers release Carbon dioxide as a
Waste
When producers and consumers die, their remains are broken down by
decomposers
This returns Carbon compounds to the____and releases _______ _______ into the air.
soil, carbon dioxide
the burning of fossil fuels and trees release more carbon into the air. Cutting down plants also does this.
true
Nitrogen fixation is a process by which _____convert nitrogen gas into a usable form.
bacteria
Most nitrogen fixation is performed by a certain type of bacteria that grows on the roots of some plants.
true( DNA proteins have nitrogen )
absorb nitrogen compounds through their roots.
plants
get nitrogen by eating plants and other animals.
animals
return nitrogen to the soil.
decomposers
Nitrogen eventually breaks down completely. • Free nitrogen is returned to the air. • The nitrogen cycle begins again.
true
