Ocean Zones
Which ocean zone has enough sunlight for photosynthesis?
The Sunlight Zone
Which ecosystem is built by colonies of tiny coral animals?
Coral Reefs
What adaptation allows dolphins to stay underwater for a long time?
They slow their heart rate to use oxygen more slowly.
A dolphin looks like a fish, but it is actually what type of animal?
A mammal
What is the main producer in a kelp forest?
What is the deepest ocean zone, home to the Mariana Trench?
The Hadal Zone
What do we call the place where a river's freshwater mixes with ocean saltwater?
An Estuary
What adaptation lets some deep-sea animals produce their own light?
Bioluminescence
What kind of water is found in an estuary?
Brackish water
How do animals get the energy they need to survive?
by eating plants or other animals
Which ocean zone is completely dark and home to anglerfish?
The Midnight Zone
Which ecosystem is made mostly of giant algae?
Kelp Forests
What adaptation helps sea urchins protect themselves?
Their sharp spines
What is a biotic factor?
The living parts of an ecosystem, such as plants, animals, fungi, and bacteria.
Primary consumers are usually which type of consumer: herbivores, carnivores, or omnivores?
Herbivores
What type of animals feed on dead plants, animals, and other debris that falls from the ocean's surface?
Detritivores
What special trees grow in tropical coastal ecosystems and help prevent erosion?
Mangrove Trees
How do mangrove trees survive in salty water?
They filter salt through their roots.
What is a abiotic factor?
The nonliving parts of an ecosystem, such as sunlight, water, air, rocks, soil, and temperature.
What is a predator that is at the top of a food web and has no natural predators?
An Apex Predator
What process allows producers near hydrothermal vents to make food without sunlight?
Chemosynthesis
Which ecosystem covers over 70% of Earth's surface?
The Open Ocean
What adaptation helps lanternfish hide from predators by matching the light above them?
Counter-illumination
What is the relationship called when two ocean organisms live together and affect each other, such as clownfish and sea anemones?
Symbiosis
What type of plankton makes food through photosynthesis?
Phytoplankton