good
luck!
have
a great
game)
100
Formula of changes in the population size
Population size = Birth rate - Death rate
100
Where does 90% of the energy go?
When energy passes through the food chain, about 90% of it is lost to the environment
100
1 liter of oil can contaminate how many liters of water?
1 liter of oil can contaminate 1 million liters of water
100
What is sigmoid curve?
Sigmoid curve - a mathematical graph having "S"- shaped curve
100
What is CO2?
What is SO2?CO2 - carbon dioxide
SO2 - sulfur dioxide
200
What is greenhouse effect?
It is warming of the Earth atmosphere
200
What harm does petroleum cause to the environment?
Petroleum makes a thin layer on a water surface. This layer prevents gas exchange, and fish do not get enough oxygen. Also, petroleum covers wings of some birds, so they cannot fly.
200
What kind of toxic chemicals contain pesticide?
Arsenic(As), Mercury(Hg) and Lead(Pb)
200
Plants absorb nitrates from the soil into their roots and use it. Which process is it?
Assimilation process
200
Who proposed binomial nomenclature system, and when?
Scientist Carolus Linnaeus
In 1753
300
Which processes present in the nitrogen cycle?
Fixation, Nitrification, Assimilation, Ammonification, Denitrification
300
Effect of the Ozone Hole?
Without the ozone layer, much more ultraviolet light would enter into the ground. It can bring to negative consequences.
300
Exponential growth
300
How many % of sunlight uses photosynthesis?
Photosynthesis uses only about 0.023% of the sunlight that reaches Earth
300
What are producers, herbivores, carnivores?
Producers - all plants
Herbivores - plant-eating animals
Carnivores - animal eating herbivores
400
Pesticides are divided into different categories. Which categories? Tell me their definition.
Herbicide - chemical substance used to control numbers of weeds and other unwanted plants
Insecticide - chemical substance used to kill insects
400
Causes of deforestation?
Most farmers convert forests and grasslands to farmlands. Some companies cut down trees to construct new buildings, roads, and railways which reduce natural forests.
400
What is desertification?
Continuous soil erosion may lead to loss of water, minerals, and living organism. This process is called desertification.
400
How pesticides enter the human body?
Pesticides enter the human body through ingestion, inhalation or via the skin. But most people can be affected via the eating of pesticide-contaminated food.
400
Cause of the Ozone Hole?
The primary cause of ozone depletion is the presence of chlorine-containing source gases. In the presence of UV light, these gases dissociate, releasing chlorine atoms, which then go on to catalyze ozone destruction.
500
Cause of Global Warming?
It's caused by human activity. The main reason for raising the atmospheric temperature and water level of the world ocean is burning of fuels that produce carbon dioxide, methane and other greenhouse gases into the atmosphere.
500
Biological classification from the largest to the smallest
Kingdom
Phylum
Class
Order
Family
Genus
Species
500
How acid rain appears?
People use coal in many factories and to heat their houses. Some kinds oh coal contain much sulfur. When they burn, they produce a harmful gas called sulfur dioxide. SO2 dissolves in rainwater and produced acid rain.
500
Solution of Global Warming
Chahge a light, Drive less, Recycle more, Check your tires, Use less hot water, Plant a tree, Turn off electronic devices
www.northwestern.edu for more information)
500
Global Warming effects
The temperature change has massive ehhect on living organisms. Some plants and animals will die from high temp. or drought, as they aren't capable of migrating.