Two major pathways of waste expulsion are shown above. Which of the two do you think happens exclusively through the gut ?

How does dog find its food ? Which sense of the dog, do you think is more developed?

Why do you think the body must remove waste substances ?

Which system do you think will remove the excess salts from our body?

In which case do you think has the land lost most of its nutrients?

In human respiratory system different stages are there beginning with nostril to gaseous exchange between blood and cell. Which of these stages do you think is amazing ? Why do you think so ?

How do you think this (parthenogenesls) happens?

Which of the following reaction do you think will result in the absorption of heat ?

Which animals and plants do you think would live in the pond margins?