Biogeochemical Cycles

Biogeochemical Cycles

By Hannah Homoelle

Open Ended

Half of all lakes and rivers in Minnesota are unsafe for swimming according to a 2010 study. What might be polluting these waterways?

​I can model how nutrient cycles affect ecosystems.

Notes

Nitrogen Cycle Game

Video

Independent Practice​

​Agenda

Todays Goals​

Some text here about the topic of discussion

Multiple Choice

What is the term for when nutrients are turned into forms usable by most plants and animals?

• bacteria

• biogeochemical cycle

• fixation

• disruption

Open Ended

Why do farmers use fertilizer?

Multiple Select

Select 2 types of organisms that do most nitrogen fixation.

• animals

• bacteria

• bean plants

• trees

Open Ended

Why doesn't fertilizer stay on the fields where it is spread?

Multiple Choice

How does excess nitrogen and phosphorus affect aquatic ecosystems?

• harms them by growing more algae

• helps them by growing more algae

• helps them by increasing oxygen

• harms them by decreasing carbon

​Runoff - water moves toward rivers, groundwater and eventually the ocean after it rains