Aquatic Biomes

Multiple Choice

Why is water so important for life on Earth?

• Because it is a major component of living organisms and supports all forms of life

• Because it is only used for transportation

• Because it is only found in oceans

• Because it is not necessary for plants

Multiple Choice

Which of the following is NOT a characteristic of freshwater ecosystems?

• High salt concentration

• Can be found on every continent

• Include a variety of plants and animals

• Temperature varies based on location

Multiple Choice

What adaptation do fish living in streams most likely have?

• Ability to swim against fast currents

• Ability to survive in saltwater

• Ability to fly short distances

• Ability to live without oxygen

Multiple Select

Which of the following statements about flowing freshwater are correct?

• Some parts of rivers move with more speed and volume

• Fish in streams are adapted to fast moving water

• Flowing freshwater always has high salt concentration

• The faster a stream flows, the more dissolved oxygen it contains

Multiple Choice

Which of the following is a reason why rivers tend to have more nutrients and less dissolved oxygen?

• Water moves slower in a river and debris settles on the bottom.

• Rivers are always deeper than lakes.

• Rivers have more sunlight than lakes.

• Rivers are always colder than lakes.

Multiple Select

Which of the following are characteristics of small, shallow freshwater bodies?

• Sunlight penetrates all the way to the bottom

• Most completely filled with plant material

• Very high amount of nutrients

• Plant growth is limited to the shoreline

Multiple Choice

Which of the following is NOT a type of marine ecosystem?

• Oceans

• Coral reefs

• Estuaries

• Lakes

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is composed of a mixture of both salt and freshwater (brackish water). It's where freshwater and saltwater meet.

Multiple Select

Which of the following are characteristics of estuaries?

• Extremely fertile

• Low nutrient levels

• Form where sedimentation equals or exceeds rising sea level

• Located near border islands

Multiple Choice

Based on the images, what is the main importance of aquatic biomes to life on Earth?

• They provide habitats for many species and regulate the Earth's climate.

• They are only important for human recreation.

• They do not affect the Earth's climate.

• They are only found in the ocean.

Wetlands

Adaptations

Threats

• Can live in water all year long

• Plants and animals live in or around water.

• Plants and animlas here are usually very adaptable to changing conditions.

• Humans are draining them for city expansion.

• Rising sea levels are threatening to wash them away.

• Invasive species are killing native animals.

Wetlands

Wetlands have a very important role. They serve as a natural filtering for rain and flooding. This is important because, as humans get rid of these wetland areas, flooding is more and more common.

Multiple Choice

What are the 2 common types of wetlands? 

• forest and marsh 

• bog and forest

• marshes and swamps

• tundra and boreal