The first living things that we know of were prokaryotes (single celled organisms without a cell nucleus), and they appeared about 3.8 billion years ago. About 3 billion years ago, the first prokaryotes evolved the ability to make food using sunlight, air, and water (photosynthesis). About 2 billion years ago, the first eukaryotes (organisms with a cell nucleus) evolved, and the first multicellular organisms evolved 1 billion years later. Approximately 500 million years ago, the Cambrian explosion occurred, and within only 140 million years of that (360 million years ago), plants, amphibians, insects, and fish lived on Earth, along with most other major invertebrate groups. Amphibians evolved into reptiles about 300 million years ago (mya), and reptiles diversified into mammals (about 200 mya), dinosaurs (225+ mya), crocodillians, and a variety of other groups that are now extinct. Dinosaurs evolved into birds about 150 mya.
Meanwhile, the simple, seedless plants from 300 mya evolved into conifers , cycads (less than 300 mya) and ginkgos (199 mya), and then flowering plants appeared about 130 million years ago, one group of which was the Magnolids.
After the K-T extinction 65.5 mya that wiped out the non-avian dinosaurs, the tiny mammals quickly evolved into larger and more diverse forms, and finally into the mammals that are alive today.
Scientists use various lines of evidence, such as the fossil record, comparative anatomy, embryology, and genetics, to show that living things have changed over time. By studying these pieces of evidence, scientists can construct evolutionary relationships and track changes in species over generations. This accumulation of evidence supports the theory of evolution.
Fossils Further evidence is derived from living organisms Bones
Scientists find evidence in fossils and living things such as changes in morphology, genetic similarities, and transitional forms that support the theory of evolution. Fossils can show physical adaptations over time, and living organisms can reflect common ancestry through shared genetic traits. These pieces of evidence help scientists to understand the evolutionary history and relationships between different species.
While plants are considered living things, there is no evidence that they are conscious.
Everything that they studied that had cells was alive, everything without them was not.
The vast majority of fossils are found in sedimentary rocks. Fossils are they key to understanding what living things used to be like.
Scientists/experts that classified them as non living things.
biologist :)
As of now, there is no confirmed evidence of living things in outer space aside from Earth. Scientists continue to explore space for signs of extraterrestrial life, such as microbial organisms on other planets or moons.
Living and Non-living things
they help living beings by biology
Sedimentary rocks provide a rich source of fossils that preserve evidence of past life forms. By studying these fossils, scientists can track the evolution and diversity of living things over time. Additionally, sedimentary rocks help scientists reconstruct ancient environments and understand the conditions in which these organisms lived.