Newly digitized letters reveal the remarkable extent of Hooker’s experiment. Sparrows, chaffinches, linnets, and several coastal African birds arrived to the island in 1863. Orchards of oranges, lemons, cherimoyers, custard apples, and lychees were planted by 1868. But not everything flourished. The orange trees withered. Hooker’s botanical plantings waned into the 1890s and only the fittest non-native plants survived. The surviving mash-up of flora from Africa and the Americas ran untended for most of the 1900s.
The biodiversity of our environment is constantly reduced from invasive species. Decorative exotic plants, flowers and trees, or animals that are brought into an ecosystem may increase the diversity of species locally; but, then the introduced species can take over, crowd out or kill the native indigenous species, and in some cases cause extinctions of particular species of plants and animals. Therefore, the species became extinct and the biodiversity of our planet is further reduced. When natural habitat or food supply is destroyed, by alien species or from other circumstances, animals have to leave to find shelter and food in an ecosystem that will sustain them. Some native animals cannot leave. Without proper habitat and food supplies, they die. Great amount or damage can occur from an insect species that bores holes in trees, or weeds that take over, or zebra mussels that clog up water systems, like in the great lakes. There are many species that are not native to an area, which can be very dangerous and cause harm and even death to humans and ecosystems. A non-native species could be something that brings disease to an area or to people through introduced bacteria or viruses, or possibly a plant that would crossbreed with other plants and cause major changes to plant life and the organisms that feed on them. Many humans want to design their own ecosystems to fit their needs. They bring in ornamental flowering trees, non-native fish, specialty seeds, and unusual animals. This can wreak havoc on the natural species and the established habitat. Invasive species may be as harmless looking as green plants or a frog. They don't have to be vicious looking to bring harm to an area. They may even be attractive to look at. This could have a detrimental effect on native species if bees or other pollinators
Unicode did decide, however, to encode the 250 new emoji to be released this summer, which should show up on your phone as soon as Apple, Google, Microsoft, and other Unicode signatories add them to their operating systems. (Apple’s iOS 8, for example, does not have the latest emoji, and the company has declined to comment on when they might go live.) None of these “new” emoji are actually new—instead, the new emoji are all either translations of preexisting font sets known as Wingdings and Webdings, or they are fairly boring new symbols, like the ever-useful Increase Font Size Symbol.
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