Chemistry
what is a element?
A substance that cannot be broken down into simpler substances by chemical means.
What is global warming?
Gradual increase in earth's temperature
what is the ultimate source of energy in an ecosystem?
The sun
What percent of water is fresh-water?
3%
what are three viral diseases?
the cold, the stomach flu and covid
WHat is a homogenus mixture?
a mixture where they are all the same
Which energy resource uses a device called a photovoltaic cell?
bonus: what does it do?
solar energy
converts sunlight into energy.
What is the 10% rule in an ecosystem?
Only 10% of the energy is aquired as one organism consumes another
What are the different types of water bonding?
cohesion and adhesion
Whats the difference between eukaryotic and prokaryotic cells?
eukaryotic has nucleus and prokaryotic doesn't
What is the group with full valence electrons?
noble gasses
What are genetically modified organisms?
And 3 examples
Organisms thats genes have been altered, exp, corn, soy bean and potato
what is at the top of the energy pyramid?
Apex predator
What is upwelling?????
Colder, denser, nutrientful water rises towards surface.
What is a microbe?
Tiny living things found all around us
What groups make full valence eletrons
BONUS (100) = an example
Use of organisms to clean up pollution.
What is biodiversity and why is it important?
Essential for the processes that support life on earth
What is a bio-indicator? And why are they important in determining the health of a river or lake?
Living organism that helps tell health of water.
If river or lack is healthy enough for organisms to live in it.
what is the difference between a carrier and a vector?
a carrier carries the disease with no symptoms, and a vector speeds the disease without having it
What is a percipitate?
a solid formed by a change in solution
Cells that are able to turn into many other cells.
What is the equation for photosynthesis?
BONUS : what is the equation for cellular respiration?
6CO2 + 6H2 --> C6 H12O6 +6O2
C6H12O6 + 6O2 --> 6CO2 + 6H2O
Proccess of eutrophication?
Run-off of excess nutrients enters the water
nutrients promote growth of algae
algae bloom occurs
algae die
decomposition of algae makes oxygen levels decrease and all fish die
what is a parasite?
BONUS: How does a parasite reproduce?
an organism that gets food at the expense of its host
Asexually