Question

plz solve 10, 12 , 15 , 16

Answer 1

15 ans
hydroelectriciy
is very helpful to us
ex dams falling from high the water gives electricity

Answer 2

Ans 12. It happens because haemoglobin in our RBC transport oxygen in body and oxygen is necessary for producing energy by the process of respiration. Thus if there is less haemoglobin then there would be less energy.

Ans 10. Silkworm is considered the queen of insects because it is very useful for us as it gives us silk fibre.