impacts of deforestation and adaptations

Question 1

loss of biodiveristy

Answer 1

• 70% of the earth’s land animals and plants reside in forests
• deforestation leads to extinction and endangered species( probosics money/ orang utan/ dodo bired)

Question 2

loss in water catchment areas

Answer 2

• loss of trees results in less transpiration
• less cloud formation less rain
• droughts due to low rainfall
• less infiltration, more surfacae run-off
• quanity of water decreases

Question 3

increased risk of flodding, soil erosion and sedimentation

Answer 3

without trees, there are no roots holding the soil tgt, which leads to soil erosion. soil is being washed into rivers as surface run-off. when soil enters streams or rivers, sedementation occurs. increased sedimentation from soil erosion affects aquatic life. Also, when soil enters the stream, it occupies more space and water lvl rises, causing flooding along the river banks

Question 4

enhanced hreenhouse effect

Answer 4

• less trees remove more carbon dioxide in the atmoshphere
• more carbon dioxide to trap heat
• leading to more global warmining

Question 5

why we need forests
- presence of vegetation

Answer 5

forest vegetation untercepts rainfall. rain water flows through the stems and infiltrate the ground. This reduces surface run-off. More water is stored as groundwater at the area

Question 6

quantity of water supply

Answer 6

vegetation transpires-> promotes rain formation-> more water at the area
tree interception-> more infiltration-> more ground water

Question 7

how plants have adapted to the conditions of the tropical rainforest (A)

Answer 7

plants in rainforest have to adapt due to the many harsh conditions posed in the rainforests including but not limited to, densely populated trees, copius amounts of rainfall, and shallow soil that has little room for water storage.
One of the adaptations include broad leaves taht are waxy or leathery. Broad leaves make it possible to absorb maxium sunlight for photosynthesis The leaves are also waxy and leathery so as to minimise loss of moisture due to high temperatures.
Another adaptation is buttress roots. The roots of the trees are built in such a way they can support heavy weight of the trees and absorb nutrients from the fallen leaves and branches on the soil. This is bc the condition of shallow soil makes it such that there is little room for water and nutrients inside the soil that trees need in order to grow.