CLEAN : How climate change is muting America's famous fall foliage

The transcript discusses the unexpected warmth affecting seasonal changes, particularly in Vermont, where ski seasons are delayed. It highlights the impact of climate change on photosynthesis, affecting tree survival and leaf colors. The cultural importance of fall colors is emphasized, noting how they bring joy and help transition between seasons. Observations on how these changes differ from past experiences are also shared.

What is the main reason for the delay in the ski season in Vermont?

• Lack of tourists

• Unexpected warm weather

• Increased snowfall

• Improved infrastructure

How does the angle of the sun affect photosynthesis in the fall?

• It decreases the rate of photosynthesis

• It has no effect on photosynthesis

• It causes leaves to fall off

• It increases the rate of photosynthesis

What pigment is responsible for the red color in leaves?

• Anthocyanin

• Xanthophyll

• Carotene

• Chlorophyll

Why is sugar production critical for trees during winter?

• It helps in leaf shedding

• It provides food for spring

• It attracts pollinators

• It prevents frost damage

What is the effect of reduced sugar reserves in trees?

• Enhanced growth in spring

• Poor start for the next year

• Better resistance to pests

• Increased fruit production

How has climate change affected the timing of fall colors?

• Fall colors are unaffected

• Fall colors appear later

• Fall colors appear earlier

• Fall colors are more vibrant

Why are fall colors considered important for people?

• They indicate the start of winter

• They are a source of joy and transition

• They help in agricultural planning

• They are used for scientific research