Abiotic Factors &
Food Webs
Question of the Day
Question: What’s an example of an abiotic
factor that has affected you today and how has
it affected you?
Answer: … … …
And Then The Rains Came
• During the
video, make a
list of all of the
interactions
between biotic
and abiotic
factors.
Biosphere Cycles
• Photosynthesis: how light energy is converted
to chemical energy
Biosphere Cycles
• Cellular respiration: how energy is released
from chemical compounds
Inv. 3.3: Beans & pH
Inv. 3.3: Beans & pH
• pH scale- measure
of H+ ions (acidity)
Inv. 3.3: Beans
& pH
A.Q. 1a, 2ab, 3 on p. 72
• 3. Question: The word autotroph comes from
the Greek words autos, meaning “self,” and
trophe, meaning “food or nourishment.”
Knowing this, what do you think the Greek
word, heteros, as in heterotroph, means?
• 3. The Greek word heteros means “other,” or
“different.”
Inv. 1.2:
Food Web
• Features you
and your food
log
• Minimum 25%
of food cut-outs
(collage); rest is
colored
drawings
• No formal lab
write-up
required
A.Q. 1a, 2ab, 3 on p. 72
• 1a. Question: What are the two primary
sources of energy that power living systems?
• 1a. The two primary sources of energy that
power living systems are solar energy and
chemical energy
A.Q. 1a, 2ab, 3 on p. 72
• 2a. Question: Explain how consumers obtain
energy.
• 2a. Consumers obtain energy by ingesting
other organisms or the remains of other
organisms.
A.Q. 1a, 2ab, 3 on p. 72
• 2b. Question: How are detritivores different from
decomposers? Provide and example of each.
• 2b. Detritivores are different from decomposers
because detritivores feed by eating detritus
particles, while decomposers feed by chemically
breaking down organic matter on which they live.
An example of a detritivore is an earthworm and
an example of a decomposer is a fungus.
A.Q. 1a, 2ab, 3 on p. 72
• 3. Question: The word autotroph comes from
the Greek words autos, meaning “self,” and
trophe, meaning “food or nourishment.”
Knowing this, what do you think the Greek
word, heteros, as in heterotroph, means?
• 3. The Greek word heteros means “other,” or
“different.”
A1
A2
A3
A4
B1
B2
B3
B4
C1
C2
C3
C4
D1
D2
D3
D4
Lidia
Ben
Justine
Caleb
Anne
Kevin
Samuel
Sophie
William
Scott
Issac
Katie B.
Carl
Juliana
Katelyn
Nicki
E1 Vlad
E2 Solenn
E3 Macie
E4 Mark
F1 McKenna
F2 Justin
F3 Katie W.
F4 Taylor
G1 Camille
G2 Sawyer
G3 Chloe
G4 Noah
H1 Marlena
H2 Wyn
H3 Christian
H4 Jessika