pH
What is pH?
a measure of how acidic or basic a substance is
Where are bees in decline?
Worldwide
Where does this take place?
Arctic waters
What are these fires destroying?
Habitats, homes of people, animals
How much has sea level risen in the Boston area?
About 1 foot
name an acid
vinegar, lemon juice
The amount of food crops pollinated by bees
1/3 of all food crops
Pros of the situation?
Shipping companies can make more money by having longer seasons and being able to get more ships through the Arctic
What is causing the fires throughout Australia?
Warm global temperatures are causing hot, dry conditions, making fires spread.
If global climate emissions of carbon continue to increase, how much could sea level rise by the year 2100 in the Boston area?
7 feet
name a base
soap, bleach
What are the pros and cons of the bee situation?
No pros
Cons: reduced crop yield
Cons
More shipping = more pollution
Less ice = many arctic animals will struggle who depend on ice for survival (polar bears, seals)
How has biodiversity changed and why?
Biodiversity has decreased because so many (1/2 billion) animals have died.
What are 2 causes of sea level rise?
Warm temperatures melt glaciers and water flows into oceans. Warm water expands.
How is the ocean's pH changing?
It is becoming more acidic
By what percent has the bee population declined since 1947?
60%
How does this affect humans?
More ships = people can get more stuff more cheaply
Less ice = planet will warm more quickly; more pollution is worse for marine food web, which many humans use as a food source
What was the maximum temperature reached in Australia this past December?
45 degrees Celsius, or 113 degrees Fahrenheit
The Tuvalu islands in the Pacific are sinking. How has rising sea level affected its water supply?
The rising ocean contaminated underwater ground supplies. Tuvalu is now totally reliant on rainwater, but water is scarce because of droughts.
What is pH really a measure of?
The concentration of hydrogen ions in a solution
How does the bee crisis impact humans?
Fewer bees = less pollination = reduced crop yield = less food supply for humans
How much faster is the Arctic warming compared to the rest of the globe?
2x faster
How did the Indian Ocean Dipole affect the climate in Australia?
Sea surface temperatures were warmer in the western half of the ocean, cooler in the east. This created droughts in Australia.
How often will a 4 foot 100-year flood occur by the end of the next century?
It might occur on every high tide.