Natural or Sexual?
Are We Neighbors?
To Evolve or Not to Evolve?
What's The Scale?
Are We Friends?
100

The blue feet of the blue-footed booby.

What is sexual selection?

100

Photosynthetic floating organisms.

What are phytoplankton?

100

Genetic changes within a population accumulated over many generations.

What is evolutionary adaptation?

100

All individuals of a single species that can interact and mate.

What is a population?

100

A clownfish lives inside a sea anemone.

What is mutualism?

200

The camouflage of this seahorse.

What is natural selection?

200

Any organism that lives in or on the sea bottom.

What are benthos?

200

The only process by which asexual organisms can increase genetic diversity.

What is mutation?

200

All interacting species within a particular area.

What is a community?

200

The tongue louse in the mouth of a fish.

What is parasitism?

300

The stinging nematocysts in a jellyfish tentacle.

What is natural selection?

300

Active swimmers in the pelagic division.

What are nekton?

300

A measure of survival and reproductive success within a population.

What is fitness?

300

All living and nonliving components of an area.

What is an ecosystem?

300

A barnacle attaches to a whale.

What is commensalism?

400

The large claw of fiddler crabs.

What is sexual selection?

400

Animals that live within the sediment of the seafloor.

What are infauna?

400

A condition where two separate populations have little to no gene flow.

What is reproductive isolation?

400

All of Earth's potential habitat areas.

What is the biosphere?

400

A decorator crab attaches sponges to its shell.

What is mutualism?

500

The flashing behavior of cuttlefish.

What are natural and sexual selection?

500

Benthic organisms that are between 100 and 500 microns in size.

What are meiofauna?

500

The swapping of genetic information between chromosomes during meiosis metaphase I that increases genetic diversity. 

What is crossing over?

500

Specific regions of the world with similar dominant vegetation and animals present.

What is a biome?

500

An imperial shrimp that rides on a sea cucumber.

What is commensalism?