Question

if the salty water would not get by a tadpole then it grows or not

Answer 1

tadpole needs salty water because they need iodine to survive. in case they do not get proper amount of salty water they would lack iodine and they will develop a deficiency disease which is known as goitre

Answer 2

a tadpole needs salt water to grow. this is because, they need iodine for their growth and salt contains iodine.