They are not, bacteria is the most important species - without them humans would not last more than a few hours.
It depends on the species. If it's endangered, there could be only a few (single numbers maybe to 100's or 1000's). If it is a very successful species like humans, there are around 7 billion humans on earth.
no, successful is an adjective in that sentence
A species is considered endangered, if it is considered to be facing a very high risk of extinction in the wild.
There were main countries in which the song God Is a Girl was considered successful. The song God Is a Girl was considered most successful in the United States and England.
No, the eastern goldfinch is a very common species.
not very well known species of humans. usually native to Africa and the species can also stretch to china. There extinct
Yes, the one species is the black people this very lethal venom called AIDS
there are very successful there are very successful
They say sharks have existed for 409 million years, a very successful species to have survived that long indeed.
Theoretically it is possible, but "theoretical" and "probable" are two very, very different things.
It depends on the species of crocodile....there are 24 crocodilian species currently recognized and only 7 of them represent a danger to humans. Of those 7 only 2 species are considered actual "man-eaters." But, as a general rule, crocodiles are more aggressive towards humans....at least the larger crocodile species. Saltwater crocodiles and Nile crocodiles are the most obvious examples, but also the mugger crocodile. American alligators are smaller and less likely to attack humans as a source of food. However, non-fatal attacks/bites are common in Florida, but fatalities are very, very rare.
Some species eat aphids and are considered very usefull.