46 & 47 Crossword on Ecology Vocab

44 & 45 Trophic Levels & Energy Pyramids

42 & 43 Energy Flow

40 & 41 What is ecology and levels of organization

38 & 39 Info on Seeds

36 & 37 Food Webs

You should have designed a food web for your river pathways animals and also for the eternal enemies video.

these food webs go on pages 36 & 37

Continue River Pathways and Eternal Enemies Video

The links above give you access to the video if you would like to see it again, or if you are absent any day this week.

34-35 River Pathways Food Web project

Page 34 should have information for ALL FIVE of the animals in your group.  If you need additional space, tape in a page. 

Page 35 should answer the 3 questions from the white sheet of paper at your table.

32 Energy Pyramid

33 More Movie Notes

We finished the video "challenges of life".  You should have two sets of

• Something I already knew (K)
• Something I learned (L)
• Something I want to know more about (M)

29-30 Graph & Conclusion

Discuss Hawk, Rabbit Grass graphs

What makes a good graph?? (page 29)

Hawk Rabbit Grass conclusion

Per 4

In order to have a sustainable community, there should be more producers than primary consumers and more primary consumers than secondary consumers.  Cards were randomply passed out and the beginning populations were 4 hawks, 9 rabbits, & 8 grass.  By the 4^th generation the grass was extinct.  Even though there were 5 hawks & 3 rabbits remaining in generation 5, they would have starved within the next 3 generations.

A stable community needs to be in the shape of a pyramid.  Meaning that the population of producers (autotrophs) is the largest, then herbivores or 1^st level consumers, then carnivores or 2^nd level consumers. In each trophic level, the available energy goes down by a factor of 10.

 

Per 6

In order to have a sustainable community, there should be more producers than primary consumers and more primary consumers than secondary consumers. Cards were randomly passed out and the beginning populations were 8 hawks, 6 rabbits, & 9 grass.  By the 5^th generation the rabbits were extinct.  Even though there were 4 hawks in generation 5, they would have starved within the next 2 generations. The grass would have survived indefinitely.

A stable community needs to be in the shape of a pyramid.  Meaning that the population of producers (autotrophs) is the largest, then herbivores or 1^st level consumers, then carnivores or 2^nd level consumers. In each trophic level, the available energy goes down by a factor of 10.

Graphs!

Sorry I am not there today.  The pre-school is closed today.

You should discuss at your table your Hawk, Rabbit Grass graphs and then decide what makes a good graph.  Please then draw the best graph on a small whiteboard to present to the class tomorrow.

Also, don't forget to check your plants!!  They look great!!

We will discuss the graphs tomorrow.  If you happen to finish early today, please read an issue of Current Science.  Hope to see you tomorrow!