Can Plants Get Enough Nitrogen? - The Carbon Cycle

The video explores the effects of increased carbon dioxide on plant growth, highlighting that while some plants like trees may grow slightly faster, noxious weeds such as Poison Ivy thrive even more. It also discusses the potential changes in tree species distribution due to climate change, predicting more red Maple trees and fewer sugar Maples, especially in New England. Additionally, the video examines the uncertain impact of elevated CO2 on different algae species, which could affect the base of the aquatic food web.

Why might increased carbon dioxide not lead to unlimited plant growth?

• Plants will stop photosynthesizing.

• Plants need other nutrients like nitrogen to grow.

• Plants will become toxic.

• Plants will run out of space to grow.

Which type of plant is likely to grow faster with elevated CO2 levels?

• Fruit trees

• Flowering plants

• Grasses

• Noxious weeds

What change in tree species is expected in New England due to climate change?

• No change in tree species

• Increase in red maple trees

• Decrease in red maple trees

• Increase in sugar maple trees

What is a potential economic consequence of losing sugar maple trees?

• Decrease in property values

• Increase in timber production

• Loss of maple syrup production

• Increase in tourism

Why is it important to understand how different algae respond to increased CO2?

• Algae are used in biofuel production.

• Algae can be used as fertilizers.

• Algae form the base of the food web.

• Algae are a major source of oxygen.