| Questions
to Consider
- How
has the size of the monarch population changed during your lifetime?
- Describe
the pattern you see in the graph. What information does the graph
show?
- Based
on the graph, in which year was the population the highest?
The lowest?
- What
is the average population size from 1994/1995
to the present?
- How
does this year's population compare to the average size?
- Scientists
look for trends. (A trend is a general direction in which something
is moving.) What trends do you see in the data?
- Divide
the data into two halves, the most recent years and the more distant
years. Calculate the average again. Describe what you see.
- Do you
think the monarch population is healthy based on this information?
Why or why not?
- What
other questions does this graph raise?
- Write
"Discovery Statements" to summarize what you learned from
this graph.
-
The
team who measures the monarch colonies every winter is led by Eduardo
Rendon of the World Wildlife Fund-Mexico. You can read the original
report (in Spanish) on the World
Wildlife Fund-Mexico website.
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