Carbon Cycle
Animals and plants release carbon dioxide into the atmosphere through…
Cellular respiration
What are all the spheres?
Atmosphere, lithosphere, hydrosphere, biosphere
Living things require nitrogen atoms to make...
Proteins and DNA
What are pests?
Living things that cause harm/annoying towards other living things (only referred to by humans)
Pesticides will build up in the bodies of organisms because they are unable to...
Breakdown or eliminate the chemicals
Plants use carbon dioxide from the atmosphere to…
Perform photosynthesis
What is the water cycle driven by?
Energy from the sun
Denitrification bacteria in the soil convert nitrogen compounds in the soil back to...
Nitrogen gas
Types of pesticides
Herbicides (kill plants), Insecticides (kill insects), Pesticides (kill both)
What is this describing: Increase in concentration of pesticides in organisms that are higher in the food chain
Biomagnification
What can hold 50x more carbon than the atmosphere?
The oceans
When does more evaporation occur?
On hot days
What is this describing: Nitrates in the soil are absorbed by plants and used in the construction of DNA and proteins of the plant
Assimilation
Explain pesticide resistance
When a pesticide is used over a long period of time, pests can become resistant to it, make it less effective.
Toxins stored in organisms at one trophic level are...
Passed on to the organisms of the next trophic level
What is energy transfer?
Animals eat plants for energy and the carbon from the glucose is transferred into biological molecules that make up the animal
Plants absorb liquid water through their and release it though their as water vapour (gas)
Roots and leaves
What percent of the Earth's atmosphere does Atmospheric Nitrogen (N2) make up?
79%
What is this describing: Nearly impossible to create a pesticide that only harms the specific pests
Non-target organisms
Give an example of bioaccumulation
DDT (pesticide) found in birds caused female birds to produce weak egg shells which led to a decline in the bald eagle and falcon population
When plants and animals excrete waste and die, the carbon stored in their bodies is...
Released back into the environment and over millions of year will turn into fossil fuels
What is this describing: When precipitation falls on the ground, some of it is absorbed as groundwater
Run off
What is this describing: Organisms excrete waste and die, releasing nitrogen compounds back into the environment
Ammonification
Organic farming does not involve the use of...
Synthetic fertilizers or pesticides
Give an example of biomagnification
Marine food chain: Pesticide found in seaweed, travels to a small minnow, into larger fish, and then the top carnivore (shark) has now consumed 3x more pesticides