Food Chains/Food Webs
True/False: All food webs must include decomposers.
False, they are not shown in a food web, but we can assume they are there
What is the starting point of energy on Earth?
the sun
What level on an Energy Pyramid photosynthesizes?
Producers
Which way are the arrows supposed to point in a food web?
toward the organism receiving the energy
Water, carbon, nitrogen, oxygen
What is the name for the fourth consumer in an energy pyramid?
Quaternary consumer
True/False: Decomposers are not needed in an oceanic ecosystem.
False, they are needed wherever life is
What is the difference between a food chain and a food web?
food webs are multiple food chains overlapping
Explain how the water cycle connects to the nitrogen cycle.
Rain brings nitrogen down from the atmosphere, lightning plays a part in nitrogen fixation, it connects to photosynthesis as water is part of the process
Where do omnivores fall on an energy pyramid? (what level are they on)
anywhere from the 2nd level (primary consumer), all the way up to apex predator
Name each chemical compound needed for Photosynthesis to occur, and name its byproduct.
H2O, CO2, UV light---O2
Place these organisms in a food web (draw and show me):
Phytoplankton
Dolphin
Coral
Algae
Tuna
Sardines
?
What are nitrates? Be specific for the points.
the final step in the nitrogen fixation process by bacteria, the usable nitrogenous compound by plants