Frogs are all over the world in various places. They do not come from one place.
No, tadpoles come from frogs then when the tadpoles grow up they become frogs not fish!
Riddle: Where Do Tadpoles in the Pawn Shop Come From? Answer: From a frog pawned (word play on pond).
You would need to research farther because both Frogs and toads come from tadpoles.
water
Tadpoles need to come up for air because they have gills, which are not as efficient in extracting oxygen from the water as lungs are in extracting it from the air. By coming up for air at the water's surface, tadpoles can supplement the oxygen they obtain through gills with oxygen from the air.
They usually live in a river or a pond that is shady and muddy.
No, algae do not turn into tadpoles. Tadpoles are the larval stage of frogs and develop from frog eggs, not algae. Algae are photosynthetic organisms that can multiply rapidly in water with sufficient nutrients and sunlight.
No, tadpoles come from eggs laid by adult frogs or toads in bodies of water like ponds or lakes. Bird feces can sometimes act as a vehicle for the spread of frog eggs, but tadpoles themselves do not come from bird poop.
That depends in part on your geography. If you are close to other bodies of water that are inhabited by frogs or toads, you are likely to find tadpoles in your pond. To have tadpoles in your pond, it must either be frequented by frogs or toads or have the eggs transported to the pond in some other way. The presence of tadpoles in a pond also depends on the pond itself. Shallow water on the margins of the pond with good vegetative cover provides favorable conditions for tadpoles. The water quality in the pond must also be conducive to aquatic life for tadpoles to survive.
I assume you are asking about the frog and/or toad life cycle. First is the egg. Eggs hatch into tadpoles. So to answer your question, eggs come before tadpoles.
The European Continent
It is a cloud of tadpoles.