No one knows with any certainty. Certainly more than a billion years ago.
Protozoa has two root words, proto which is Greek for "first" and zoa which is Greek for "animal".
The term protozoa refers to a diverse group of microscopic single-celled organisms that live in water, soil, and the bodies of plants and animals. The name protozoa means "first animals," reflecting their status as some of the earliest and simplest forms of animal life on Earth. These organisms play important roles in various ecosystems as predators, parasites, and decomposers.
The scientific name for the phylum Protozoa is Protozoa.
The name "Adam" is often associated with being the first man in Abrahamic religions, and some interpretations consider Adam the first human, akin to the first animal.
Protozoa.
The first type of organisms to appear on Earth were single-celled prokaryotic organisms, such as bacteria and archaea. These organisms are among the most ancient forms of life and played a crucial role in shaping the planet's early environment.
yes
Chick or the egg!
In someones pants??
Protozoa.
well the first thing was algae...and formed from there on
bacteria
protozoa
Read your science book chapter . It is on the first page.
the animals come on earth because god put them there
Protozoa has two root words, proto which is Greek for "first" and zoa which is Greek for "animal".
About 475 million years ago