LTS - Environmental Science

What are the huge sheets of ice that once covered almost the entirety of Canada called?

• Icebergs

• Glaciers

• Frozen Ocean

• Snow

Answer explanation

Glaciers are large sheets of ice that can extend for miles. Glaciers are located in the Artic and Antarctica, with the largest glaciers appearing in Antarctica. Icebergs, on the other hand, are smaller pieces of ice that have broken off (calved) from glaciers and now drift with the ocean current.

Which of the following is a protected species found in marshes?

• Bald Eagle

• Sandhill Crane

• Eastern Fox Snake

• All of the above

Answer explanation

All of the above are protected species found in marshes, making the correct choice 'All of the above'.

______ is the removal of sediment and debris from the bottom of lakes, rivers and other bodies of water.

• Dispersants

• Skimming

• Vacuum Filtration

• Dredging

Answer explanation

Dredging is the process of removing sediment and debris from the bottom of lakes, rivers, and other bodies of water.

The increase in organic matter spreading out from peat bogs over time is called ______.

• Terrestrialization

• Paludification

• Watershed

• Eutrophication

Answer explanation

Paludification refers to the increase in organic matter spreading out from peat bogs over time, making it the correct choice for this question.

Erosion is what happens when sediments like sand and silt build up in the river.

• TRUE

• FALSE

Answer explanation

The statement is FALSE because erosion occurs when sediments are carried away from the river, not when they build up in it.

Glaciation is the process that formed the Great Lakes.

• TRUE

• FALSE

Answer explanation

Glaciation is the process that formed the Great Lakes, making the statement TRUE.

Climate Change doesn't affect the amount of freshwater entering into the oceans.

• TRUE

• FALSE

Answer explanation

The glacier in the artic are melting, increasing the level of freshwater in the oceans. Freshwater in Arctic waters isn't necessarily bad — or even uncommon. It's what makes sea ice possible by keeping the cool water on the surface instead of it sinking below less dense, warm water, but it could be problematic when freshwater affects the biomes that lives in the other oceans.

A wetland specialist is a person who conducts a thorough study of a wetland whenever someone wants to carry out a project there, in order to determine the impact of the project on the area in question.

• TRUE

• FALSE

Answer explanation

The statement accurately describes the role of a wetland specialist, who assesses the impact of projects on wetlands before they are carried out.

How many species of sturgeon live in Canada?

Answer explanation

White and Green Sturgeon live in the ocean and rivers near the Pacific coast. Lake Sturgeon live in lakes and rivers east of the Rocky Mountains. Atlantic and Shortnose sturgeon live in the ocean and rivers near the Atlantic coast.

Shrek lives in what kind of freshwater wetland?

Answer explanation