SCIENCE BEHIND THE STORIES:3RD CANADIAN
EDITION LATEST EXAM 2025 WITH MULTIPLE
CHOICE OF QUESTIONS AND DETAILED CORRECT
ANSWERS ALREADY GRADED A+ AND 100%
GUARANTEE PASS (BRAND NEW!!!!!!)
Define sustainability - CORRECT ANSWER-Live within planet's means so that
resources sustain us and the rest of Earth's biota
Define sustainable development - CORRECT ANSWER-Meets the needs of the
present w/out sacrificing the futures
Define biodiversity - CORRECT ANSWER-Cumulative number and diversity of
living things
Define globalization - CORRECT ANSWER-Increased global connections in
trade/politics
What are two characteristics of an open system? - CORRECT ANSWER-Not
generally contained within boundaries, Some material moves into or out of
the system
, What is a characteristic of a closed system? - CORRECT ANSWER-material is
not exchanged across the system boundary
What is a feedback loop and what does it result in? - CORRECT ANSWER-A
circuit that feeds back some of the output to the input of a system, Results
in change to the system
What kind of energy is input to the earth and what kind of energy does the
earth output? - CORRECT ANSWER-solar energy, terrestrial energy
When does a positive feedback loop occur? - CORRECT ANSWER-Occurs when
an increase in output leads to a further increase in output, Destabilizing
What is an example of a positive feedback loop? - CORRECT ANSWER-Off road
vehicles on sand dunes causing vegetation loss. They cause erosion and
widening of ORV paths which increases loss of vegetation.
When does a negative feedback loop occur? - CORRECT ANSWER-Occurs when
an increase in output leads to a decrease in further output, Stabilizing
Growth occurs at a __________ per time period - CORRECT ANSWER-
constant rate
What are some results of the exponential growth of water hyacinth (an
invasive species in south america)? - CORRECT ANSWER-shift in oxygen levels
(some aquatic organisms die and some thrive), can't fish, can't draw water
from lake