how many number of species are there on earth?
359253
There are approximately 1.6 to 1.7 million described species on Earth. Estimates exceed 100 million species, but the difficulty lies in our ability to search for and describe them all (some even estimate there are over 100 million bacteria species alone and that our techniques, and interest, to find them limits such numbers).
472210
There are 7 Earths in universe exactly the same of our earth it is mention in the holy books
1169797
There are about 250,000 angiosperm species (flowering plants and trees), and about 80,000 gymnosperm species.  Include the other groupings, and the total comes to about 370,000.\n\nThat said, it is estimated that we have discovered only between 10 and 40% of all known species (and we probably never will discover them given the rate of destruction of habitats such as rain forests.\n\nSo the total is probably between 1.5 and 3.7 milliion, though it's a moot point because we'll never, ever know!
194278
biodiversity is how many different types of organisms live in a area. And -it helps because it is less likely for invasion of insects. how are you because my class just finished having a test on this
49956
one species of animal is defined as a group of organisms that may breed to produce viable offspring. eg. "Mammals" are not a "species" as they are not all able to interbreed (never seen a rabbit-sheep cross, have you?) I would estimate at over 1000 "animals" although there must be many more species of organism, including many species of insects, plants, bacteria, fungi, viruses etc.\n\nLook up the science of "phylogenetics" or phylogeny for more details
991656
Estimates of the present global macroscopic species diversity vary from 2 million to 100 million species, with a best estimate of somewhere near 10 million. Note the word macroscopic, this excludes microscopic oragnisms.\n\nThe U.S. has over 17,000 identified native plant and tree species, including 5,000 just in California. With habitats ranging from tropical to arctic, the flora of the U.S. is the most diverse of any country; yet, thousands of non-native exotic species sometimes adversely affect indigenous plant and animal communities. Over 400 species of mammal, 700 species of bird, 500 species of reptile and amphibian, and 90,000 species of insect have been documented.\n\n Insects are the most diverse group of animals on the earth, with around 925,000 species described—more than all other animal groups combined. There's over a million arthropods, a group which includes insects.\n\nAbout 350,000 species of plants have been estimated to exist. As of 2004, some 287,655 species had been identified, of which 258,650 are flowering.\n\nI'm just adding them up.
773515
The earth consists of 91 or 92 natural elements in many varied combinations. There is no one formula for the earth.
556954
there are nine planets in the solar system. it is not know yet how many planets are there in the entire universe, because we just know about 3 galaxies (and still do not know about any planets in galaxies other than the milky way)
141678
There are lots, but not a million. "At present tazonomists recognize about 34,000 spider species..." (Biology of Spiders, by Rainer F. Foelix, second edition, pg 3) Scientist think there could be about twice that many total.
1011141
Species richness is the raw number of species found in a community.  Species diversity indices are calculated based on the balance in the number of individuals of each species.  A common practice in calculating species diversity asks "If two individuals are pulled at random, what is the probability that they will be members of two different species."\n\nA community may have high species richness, but still have low diversity.  This is caused by having only one or two really common species whereas the rest are rare.  \n\nImagine a forest with a hundred trees.  90 are members of one species, the remaining ten are each single individuals of separate species.  Total species richness is 11 species, but the diversity is low.  The same 11 species forest with about 9 individuals of each species would have much higher species diversity.
659956
We have catalogued an estimated less than half the species out there- And once catalogued, we don't have an active system to determine populations of most species.  Thus, we are in the dark about what species are there, how many there are in the population, etc.  GIven that, we have only vague guesses about the number of species lost.  In a similar vein, we assume new species are being born each year, or at least each decade, but since we don't know what species were there before, we certainly can't tell if a species is newly evolved, or is just one we have never seen before.
895938
The flowering plants, the largest group in the plant kingdom, with about 250,000 species.
863776
Around 23 different Species, under the Wikipedia listing of the Genus "Python"
604824
The astrobiology folks at NASA have calculated that there are between one and thirty billion habitable planets in our Milky Way Galaxy.  If our solar system is typical,  you can multiply that by about 10 to get total planets: between 10 and 300 billion.  \n\nSo where is everybody?
715942
the radius of the Earth 6375.654784689 Km. There are many living things on it and it will not be ever counted exactly.
15072
"Over 38,000 species of spiders have been identified, but because of their great ability for hiding, it is believed that about 200,000 species exist. All species are venomous (with the exception of the families Uloboridae and Heptthelidae), but only 40 species are known to be potentially deadly to humans."
693261
Demographers have come up with estimates ranging between 69 billion and 110 billion humans.\n\n\nA complication, among scientists at least, is that we do not know precisely when our primate ancestors became human. Many researchers have arbitrarily settled on one million years ago, even though our own subset of the genus Homo, H. sapiens sapiens, did not emerge until around 40,000 years ago.\n\nIf the paleolithic crowd (1 million years to 25,000 years ago) strikes you as too crude for admission to the communion of saints, subtract 36 billion or so from the figures above.