There is a mass mortality of fishes in a pond. What may be the reasons?

Now-a-days we find animals like leopards and bears intruding into our living places. What may be the reasons for this?

What is deductive reasoning?

Ravi wants to measure the temperature of the hot water with clinical thermometer. Kavitha said it is wrong. What may be the reason?

A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this? i) Lots of urea and phosphate fertilizer were used in the crops in the vicinity ii) The area was sprayed with DDT by an aircraft iii) The lake water turned green and stinky iv)Phytoplankton populations in the lake declined initially, thereby greatly reducing photosynthesis.

Now a days we find animals like leopard and bears intruding into our living places. What may be the reason for this ?

What could be the reason for that?

What is the reason for edema?

What are the adaptations of fishes?

What are the reasons for paralysis?