SB -living world Flashcards
What is a case study of a tropical rainforest?
The Amazon Rainforest
It serves to illustrate various environmental issues.
What are the primary causes of deforestation in the Amazon Rainforest?
- Subsistence and commercial farming
- Logging
- Road building
- Mineral extraction
- Energy development
- Settlement
- Population growth
What is one significant impact of deforestation on biodiversity in the Amazon?
Reduction in the number of species and extinction of endemic species
38 species have become extinct due to shrinking habitats.
How does deforestation contribute to climate change?
- Reduction of carbon sink capacity
- Increased carbon dioxide emissions from deforestation and fires
What role does the canopy of trees play in soil preservation?
It protects the soil from heavy rain, preventing soil erosion
Removal of the canopy leads to the washing away of fertile topsoil.
What is the effect of soil erosion caused by deforestation?
Loss of fertile topsoil and silting up of rivers
How many indigenous tribes are left in the Amazon?
240 tribes
Many have been forced out of their homes due to development projects.
What is one consequence faced by displaced indigenous people in the Amazon?
Loss of culture and heritage, leading to addiction issues
Displaced individuals often end up in cities.
Fill in the blank: The Carajas iron ore mine in Brazil is the world’s _______.
largest
True or False: Brazil gets 85% of its energy from hydroelectric power generated by dams in the Amazon.
True
What illegal activity contributes significantly to deforestation in the Amazon?
Illegal trade in wildlife, including hunting and poaching
definition of food chains
A sequence of feeding relationships that she will organisms eat and the movement of energy through tropic levels
food webs definition
A combination of all the food chains in an ecosystem shown how organisms are interconnected
plant adaptions in hot deserts
cactus: some plants have lung Tap roots to reach underground water. Some leaves of spines have glossy waxy leaves to reduce water loss. Some plants still their water in their root stems leaves or fruit.(succulents)
Animal adaptions in hot deserts
such as a camel, they have stretchy nostrils to keep out the sand long eyelashes to keep out the sand out of their eyes. They have a hump for storing food, how did feet to stop sinking into the sand and protect from heat, live three mouth help camels eat spiky plants
