Selvam from Cuddalore district, Tamil Nadu, shared that his village. Class 8

Selvam from Cuddalore district, Tamil Nadu, shared that his village. Class 8

Question 1.

Selvam from Cuddalore district, Tamil Nadu, shared that his village was less affected by the 2004 Tsunami compared to nearby villages due to the presence of mangrove forests. This surprised Sarita, Shabnam, and Shijo. They wondered if mangroves were protecting the village. Can you help them understand this? Class 8

Answer:

Yes, mangroves protected the village.

1. Mangrove trees have strong roots that hold soil and slow down water impact protecting coastal areas.
2. They act like a natural barrier, slowing down strong winds and waves during storms and tsunamis.
3. That’s why Selvam’s village was less damaged than others.

Question 2.

Look at this food chain : Class 8

Grass → Grasshopper → Frog → Snake

If frogs disappear from this ecosystem, what will happen to the population of grasshoppers and snakes? Why?

Answer:

1. Grasshoppers will increase because no frogs are eating them.
2. Snakes may decrease because they lose a food source.