Nature of Science
The variable in an experiment that is changed by the experimenter.
independent variable
Where an organism lives is called this.
habitat
The long-term changes in global temperatures and alterations in other aspects of the climate.
Climate Change
What are the reactants of photosynthesis?
CO2 and H2O and sunlight
An essential ingredient for life: food, water, shelter.
resource
The variable in an experiment that responds to the independent variable and is often recorded as data in the data table.
dependent variable
The role the organism plays in its habitat.
Niche
What are 3 examples of renewable energy?
What are the products of respiration?
CO2 and H2O and ATP (energy)
List two types of biotic limiting factors.
predation, competition, disease, mates, food availability
A factor that is held constant in an investigation, it doesn’t change.
controls
How do a population and community differ?
communities=different animals living together
populations=same animals living together
What are two examples of nonrenewable energy?
coal, oil, gas
(fossil fuels)
What organelle makes sugar during photosynthesis?
Why do organisms eventually reach carrying capacity?
They run out of resources and the birth rate = death rate
What is the independent variable in this question?
How does flower color affect the number of bees that visit the flower?
Give an example of two organisms living in a commensalistic relationship.
barnacles and whales
barnacles get fed as whale swims, and whale not harmed
any others discussed in class:
Birds and trees, Remoras and sharks
What is the Greenhouse Effect?
(be specific)
Carbon dioxide in the atmosphere due to the burning of fossil fuels traps the heat from the sun, warming the planet beyond what it needs.
What organelle makes ATP during respiration?
mitochondria
What will cause organisms to grow logistically?
They will run out of resources.
What is the dependent variable in this investigation?
How does weight fluctuate depending upon the number of calories eaten?
weight
What is missing in this food chain?
Grass -> Gazelle -> Vulture -> Lion
sun
What is happening to the pH of our oceans and why?
(be specific)
decreased ocean pH = increased CO2 in the atmosphere. CO2 combines with water to make carbonic acid.
Why= increased burning of fossil fuels
Which chemical formula does NOT contain carbon?
CsOH HCl NaHCO3
CsOH HCl
If there are 8 organisms living in a 2m x 2m area, what is the population density?
2 organisms per meter