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Seed ferns in Gymnosperms were the oldest seed plants but none of them is in living condition today.
the difference between living and non-living things is living things have life,some of the living things can produce it's own food,living things also depend on the other living things and non-living things is a thing that theliving thing useand it has no life .
since they are not yet discovered, there is no exact percentage of plants and animals, There is an enormously large number of endangered species living in tropical rain forests, and most of these have not yet been "discovered" by scientists. Because rain forests are quickly being converted to farmland and human settlements, many of these species are becoming extinct before humans know anything about them. (it said endangered species how about the none, can you imagine how many are they) this is the other one: Because most of Earth's biodiversity (the number of species in a given habitat) is not yet discovered and cataloged, it is likely that there are perhaps several million endangered species on Earth. thanks to this site: http://www.scienceclarified.com/El-Ex/Endangered-Species.html
Living things have a metabolism and use sources of energy to keep themselves from decaying. Living things can also grow, they replicate, many respond to stimulus too. Living things also have some hereditary molecules such as DNA and RNA. The smallest unit for a living thing is a cell, and all living things are made of one or more cells. Living things also evolve with time. Broader definitions of life include things that do not have a metabolism such as virus and other self-replicating molecules. Some people don't consider viruses to be alive however because they do not have their own metabolism and so can't even reproduce without using a host living cell to do that for them. Viruses are also not a cell, they're more of an organic particle with their own DNA or RNA.
none because no sepiecis are still living?
none because no sepiecis are still living?
None! Abiotic factors are non-living. Biotic is living
Plants. "Biotic" refers to anything living, so if you exclude animals (and I assume that you include humans and insects within the category of animals) then there's only plants left. Abiotic factors include weather, elevation and climate.
Fossil records back up evolution by showing the ancestors of extant species. If species didn't evolve, the fossils would be of species currently living, since none of them would have changed. Extant = Currently living Extinct = No longer living
There is only one subspecies of Homo sapiens, which is Homo sapiens sapiens. However, within the subspecies, there is genetic diversity leading to physical differences among different populations, but all are classified as Homo sapiens sapiens.
If you agree that living factors are represented by prey and food, one can say that during non-breeding season, there are none: it's too cold and there is no food chain. During breeding season, however, several types of sea birds and sea mammals visit Antarctica's beaches. Often adult animals -- prey, feed chicks from other species -- food, to their young.
There are 6 living species of Tigers. 5 species live in "Jungle" type habitats in Asia 1 species (The Siberian or Amur Tiger) lives in Siberia which is of course not a "Jungle".
Part 1: Evidence from the Fossil Record Part 2: Evidence from Geographic Distribution of Living Species Part 3: Evidence from Homologous Structures and Vestigial Organs Part 4: Evidence from Embryology
The way that scientists conclude that a species is extinct, is that when no one is able to observe any more living members of that species, we arrive at the reasonable conclusion that there are none left.
Living.
Something that is not living?