Names of two microbes or microscopic animals

Amphibians breath through their

Herbivores like cows , goats , horse and giraffes have which type of teeth for biting and chewing grass

What is the mass movement of animals or birds from one place to another called

Which of these animals use two peddle like limbs to push back water and swim

Which is a flightless bird ?

Whales and dolphins are classified as

Locusts are harmful migratory

Water boatman uses it's leg as