Sea Otters
Food Chains and Webs
Ecosystems
Populations
Trophic Levels
100

Between 1750 and 1911, why were so many Sea Otters disappearing?

They were hunted for their fur

100

A Food Web is made up of many interconnected __________________.

Food Chains

100

The _________ factors are everything LIVING in an ecosystem.

Biotic

100

All the members of one species of organism, within the same ecosystem, are called a ____________.

Population

100

Where does all the energy in an ecosystem come from?

The Sun.

200

In which ecosystem do Sea Otters live?

The Kelp Forest.

200

Energy travels ______ the Food Chain. 

a) Up

b) Down

a) Up

200

The _________ factors are everything NON-LIVING in an ecosystem.

Abiotic

200

True or False: Humans have positively impacted the population size of Sea Otters over the last 100 years

True

200

What is the first, and largest, trophic level?

Producers.

300

Name 2 organisms that Sea Otters eat.

Urchins, crabs, clams, mussels, and snails

300

When drawing a Food Chain, the arrows always point to where the _________ is going.

Energy

300

Name 2 types of ecosystem.

Did they name them correctly?

300

When there are to many predators, the prey population ___________. 

a) increases b) decreases

Decreases

300

What is the highest level of Consumer?

Tertiary Consumer

400

The Sea Otters presence effects in an ecosystem, this makes them a _______________. 

Keystone Species.

400

True of False: There can only be one Food Chain in an ecosystem.

False

400

True or False: There can only be one Tertiary Consumer in an ecosystem.

False

400

A population is at ______________ when it can stay the same size despite members dying

Equilibrium

400

Which Trophic Level is responsible for returning matter back into the ecosystem?

Decomposers

500

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)

500

True of False: There can only be one Food Web in an ecosystem.

True

500

What Ecosystem is Los Angeles: a) Kelp Forest b) Desert c) Chaparral 

c) Chaparral 

500

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

500

Does Energy flow or cycle?

Flow.

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