Mr. Grantham is living so he is biotic. His shirt is made from plants so his shirt is ___________
also biotic
Worms and mold are __________
decomposers
A metal door is non-living. Also called _________
Abiotic
What starts every food chain/web?
The sun
How much energy is lost between trophic levels?
90%
What do the arrows represent in a food chain or food web?
The direction of energy
What animal is the apex predator?

Killer whale
In a food pyramid where is the least of amount of energy found? Why?
At the top where the apex predator is. This is due to 90% of the energy being lost in each tropic level for growth and reproduction.
A vulture can be classified as a ________________
Scavenger
The third consumer in a food chain is the __________ _____________
teritiary consumer
Autotroph is something that makes its own food. What does the Latin word 'auto' mean?
Self
Human botfly larva infects humans. The larva benefits and the human host is harmed. This represents which symbiotic relationship?
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Parasitism
What do killer whales eat?

Seals, bowhead whales, and walruses
Humans are _____trophs
hetero
Birds living in a tree is what symbiotic relationship?
Commensalism
What symbiotic relationship is this?

Mutualism
Name an autotroph in the desert
Cactus
Which one is correct?

Both are correct
Which of the following is NOT an abiotic factor?
A) Decomposer
B) Sunlight
C) Wind
D) Humidity
E) Temperature
F) Water
G) Clouds
A) Decomposer
Heterotrophs obtain energy from all of the following except:
A) Decomposition
B) Parasitism
C) The sun
D) Other heterotrophs
C) The sun
Which of the following two organisms are producers?
A) Plants and phytoplankton.
B) Plants and consumers.
C) Consumers and phytoplankton.
D) Phytoplankton and chlorophyll.
E) Phytoplankton and herbivores.
A) Plants and phytoplankton
if there were 10,000,000 units of energy starting at the producer level then how many units would be left for the apex predator after going through three levels of consumers?
1000 units
What is the difference between a population and a community?
A population is a group of organisms belonging to the same species that live in the same area and interact with one another.
A community is all of the populations of different species that live in the same area and interact with one another.
What would happen to the tree population if the bird and mountain lion population increased?

It would increase due to the decrease of its predators
Name all of the secondary consumers

Rat, frog, dragonfly, thrush