Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
What are five categories of water use which the provincial and federal government regulate for water quality |
irrigation human drinking water protection of addict life livestock drinking swimming |
|
list four different groups of invertebrates that can be found in freshwater systems |
water stridden mosquito larva water boat man flatworm |
|
identify five chemicals that are regularly monitored in aquatic systems |
dissolved oxygen acidity pesticide heavy metals plant nutrients |
|
what effect does spring acid shock have on aquatic organisms |
it can affect the eggs of a aquatic organisms |
|
identify an invertebrate family that would likely be among the first to die if the pH of its habitat decreased |
insects |
|
explain the term toxicity |
how poisonous a substance is |
|
explain the following statement about table salt: The LD50 is 3000 mg/kg for rats. |
50% of rats died In the tests LD stands for lethal doses |
|
how can heavy metals harmful |
it can affect normal development and cause permanent brain damage or even death to kids. |
|
list four greenhouse gases |
water vapor carbon dixocide methane nitrogen oxides |
|
what pollutant is removed when people use scrubbers |
sulfur dioxicide |
|
what are the scrubbers chemical reaction create |
gypsum |
|
why is carbon monoxide harmful to us and animals |
it is a silent killer it is colorless and odorless gas |
|
identify three ways that global warming might affect our world |
violent storms flooding of coastal areas spread of diseases |
|
what factor has contributed to the thinning of the ozone layer |
the cfc reacting with the ozone |
|
what is happening as a result of this thinning |
harmful UV rays come through |
|
what are countries doing to protect the ozone layer |
they have signed an international agreement |
|
m |
l |