Topic 1.1-1.4
Roughly 78% of the air is made of this gas, but plants cannot use it until it is "fixed" into compounds...
Nitrogen
These are the three most common organic molecules found in the foods we eat
Carbohydrates, Lipids, Proteins
This term describes water that is safe for humans to drink
Potable
This is the term for a large deposit of groundwater that can yield a usable amount of water
Aquifer
Which scale, ranging from 0 to 14, do scientists use to measure how acidic or basic a liquid is
pH Scale
This term refers to any alteration to the environment that produces a condition harmful to living things
Pollution
This experimental test is used to determine if a food sample contains lipids
Paper Bag Test
Scientists often use these "nature’s detectives," such as macroinvertebrates or trout, to determine water quality
Bioindicators
These are the three stages of how a pollutant is transported through the air
Release, dispersion, and deposition
What are the three primary nutrient elements usually found in fertilizers?
Nitrogen, Phosphorus, Potassium
This type of chemical reaction occurs when an acid and a base are mixed together to produce salt and water
Neutralization
This term refers to the surface where a living thing lives and obtains its food
Substrate
If a 1,000 g sample of water is found to contain 0.005 g of a specific chemical, what is the concentration of that chemical in parts per million (ppm)
5 ppm
This specific type of bioremediation uses plants to "correct" or clean pollutants (SPELLING COUNTS)
Phytoremediation
What does calcium do for our bodies?
Building and maintaining bone strength
These are the two broad categories of substances: one contains carbon bonded to hydrogen, while the other generally does not
Organic and Inorganic substances
Unlike diffusion, plants use this energy-requiring process to pull nutrients from the soil into their roots when moving from a lower to a higher concentration
Active Transport
Spell what CFC stands for correctly
Chlorofluorocarbon
This liquid is created when water sinks into the ground and dissolves chemicals and minerals from the soil
Leachate
Explain the MAIN difference between "biotic" and "abiotic" nitrogen fixation
Biotic uses living things to fix nitrogen, abiotic uses non living things to fix nitrogen
This environmental phenomenon occurs when sulfur and nitrogen oxides from power plants react in the atmosphere
Acid Rain
The digestion of large organic molecules occurs by this specific process, where the prefix means "water"
Hydrolysis
Substance A has an LD50 of 45 mg/kg, while Substance B has an LD50 of 1,200 mg/kg. Identify which substance is more toxic
Substance A
These two factors determine how fast and how far leachate will spread through the ground
Porosity and permeability
CFCs are described as "persistent pollutants." Explain what "persistent" means in an environmental context
the chemical is stable and does not break down easily, allowing it to remain in the environment for a long time