ANSWERS
In the scientific method, a ________ is an educated guess, while a _____ has been
rigorously tested and confirmed. - Answer- hypothesis; theory
In Silent Spring, Rachel Carson described a future of - Answer- consequences if
pollution of the environment with DDT continued.
What are the three themes the book suggests for dealing with the task of creating a
sustainable future? - Answer- sustainability, stewardship and sound science.
A ______ is a group of individuals that share certain characteristics and can
interbreed. - Answer- Species
Soils may have only a small amount of phosphorus which makes it harder for plants
to grow. This is known as the - Answer- Law of limiting factors
______ flows in a 1-way direction through an ecosystem, while ______ are
constantly recycled - Answer- Energy; nutrients
Burning fossil fuels and reduction of photosynthesis through deforestation has
increased the atmospheric content of - Answer- Carbon
Which of the following is NOT true about exponential growth? - Answer- It is very
common in nature
Which of the following is an example of environmental resistance? - Answer- All are
examples of environmental resistance
Find the INCORRECT match from the following species interactions: - Answer-
carnivore (-); herbivore (-)