Sea Otters
Between 1750 and 1911, why were so many Sea Otters disappearing?
They were hunted for their fur
A Food Web is made up of many interconnected __________________.
Food Chains
The _________ factors are everything LIVING in an ecosystem.
Biotic
All the members of one species of organism, within the same ecosystem, are called a ____________.
Population
Where does all the energy in an ecosystem come from?
The Sun.
In which ecosystem do Sea Otters live?
The Kelp Forest.
Energy travels ______ the Food Chain.
a) Up
b) Down
a) Up
The _________ factors are everything NON-LIVING in an ecosystem.
Abiotic
True or False: Humans have positively impacted the population size of Sea Otters over the last 100 years
True
What is the first, and largest, trophic level?
Producers.
Name 2 organisms that Sea Otters eat.
Urchins, crabs, clams, mussels, and snails
When drawing a Food Chain, the arrows always point to where the _________ is going.
Energy
Name 2 types of ecosystem.
Did they name them correctly?
When there are to many predators, the prey population ___________.
a) increases b) decreases
Decreases
What is the highest level of Consumer?
Tertiary Consumer
The Sea Otters presence effects in an ecosystem, this makes them a _______________.
Keystone Species.
True of False: There can only be one Food Chain in an ecosystem.
False
True or False: There can only be one Tertiary Consumer in an ecosystem.
False
A population is at ______________ when it can stay the same size despite members dying
Equilibrium
Which Trophic Level is responsible for returning matter back into the ecosystem?
Decomposers
Sea Otters are a: a) Producer b) Primary Consumer c) Secondary Consumer d) Tertiary Consumer or e) Decomposer
c) Secondary Consumer; because they eat primary consumers (urchins) and are eaten by tertiary consumers (sharks)
True of False: There can only be one Food Web in an ecosystem.
True
What Ecosystem is Los Angeles: a) Kelp Forest b) Desert c) Chaparral
c) Chaparral
When a population size is large enough to satisfy their predators, but small enough not to eat all the prey, they have reached _____________.
Carrying Capacity
Does Energy flow or cycle?
Flow.