5.2
Dissolved in rain or snow, the nitric acid falls as ______
Acid precipitation
Because many phosphate salts are not soluble in water, they sink to the bottom and ______
Accumulate and sediment
Carbon exists in__________
Air, water and living organisms
Nitrogen must be _________ before organisms can use it
Altered or fixed
All organisms need nitrogen to __\______\ which are used to build new cells
Build proteins
The__________ is the movement of carbon from the nonliving environment into living things and back
Carbon cycle
During cellular respiration, some of the carbon is released back into the atmosphere as
Carbon dioxide
Producers convert __________ in the atmosphere into carbohydrates during photosynthesis
Carbon dioxide
Proteins, fats and carbohydrates which make up all organisms
Carbon is the essential component of
Molecules may form deposits _________which are know as __________
Coal, oils, or natural gas and fossil fuels
_______ breaks down decaying plants and animals, as well as plant and animal wastes
Decomposers
Carbon stored in the bodies of organisms as ___________ may be released into the soul or air when an organism dies
Fats, oils, or other molecules
_______ which people use to stimulate and maximize plant growth contain nitrogen and phosphorous
Fertilizer
Global warming is an____________ of the earth
Increase in temperature
Some carbon is stored in__________ forming one of the largest___________ on earth
Limestone, carbon sink
In the air, nitric oxide can combine with oxygen and water vapor to form______
Nitric acid
When fuel is burned large amounts of ___\____ is release into the air
Nitric oxide
The ________ is the process in which nitrogen circulated among the air, soil, water, plants, and animals in an ecosystem
Nitrogen cycle
After decomposers return nitrogen to the souls, bacteria transform a small amount of the nitrogen into _________ which then returns to the atmosphere to complete the cycle
Nitrogen gas
Excess algae can deplete an aquatic ecosystem of imports nutrients such as ___\_ on which fish and other aquatic organisms depen
Oxygen
Small amounts of phosphorus dissolve as \_____[_ which moves into the soil
Phosphate
________is an element that is part of many molecules that make up cells of living organisms
Phosphorus
The _________ is the cyclic movement of phosphorus in different chemical forms from the environment to organisms then back to the environment
Phosphorus cycle
Excess nitrogen and phosphorous can cause
Rapid growth of algae or algae bloom
Excessive amounts of fertilizer can enter terrestrial and aquatic ecosystems through ________
Runoff
Plants get the phosphorus they need from_____[_[[[ while animals get theirs by___________ that have eaten plants
Sooo and water/ eating plants or other animals