XPR virtual currency

1. Careful investment, if you are in some stock exchange group to see other people's earnings, you must pay attention, it is likely to be a fraud. Generally, there are two forms of digital currency scams. One is air currency, which is issued first. As you say, just like new shares, how rare and how many relationships do you need to buy, how many times do you need to buy it, and how many times do you need to buy it, and so on. Some people will print screenshots. These are all analog forms. Moreover, there is a lock up period for buying, so the basic money can't be put forward. There is also a form of trading with leverage, which is the same as futures. You can make a lot of money, or you can burst your position in an instant, making you lose all your money. If you don't invest more than one million assets, don't dream of making a fortune, or you won't even know what's going on.

2. Using the impulse theorem to get the kinetic energy theorem in the process of free fall, we can get the velocity V at the moment of landing, and then use the impulse theorem ft = MV

so if we need to get the impact force, we need a contact time, estimate one, and then get the impact force
you can't get the impact force under the given conditions, So we can't work out the specific value.

3.

Yes

most parrots mainly eat fruits, seeds, nuts, berries, buds and twigs of plants on trees or ground, and also eat a small number of insects. Honey sucking parrots mainly eat pollen, nectar and soft and juicy fruits

The species of parrot is the most in Latin America and Oceania, and much less in Africa and Asia, but there are some famous species in Africa, such as grey parrot, couple parrot and peony parrot. The most famous parrots in Latin America are all kinds of large macaws. Parrots are more diverse in Oceania than in Latin America

extended materials:

there are many kinds of parrots with different shapes and colorful feathers. There are magnificent purple and blue Macaws, white headed sunflower cockatoos with yellow crowns, eloquent Amazon parrots, colorful rainbow honey sucking parrots, small sunflower cocktails, small and exquisite budgerigars and peony parrots, red and green folding parrots, and pigeon shaped African Grey parrots<

Thailand issued a set of parrot stamps in 2001, namely, scarlet breasted parrot, Alexandria parrot, Parakeet and parrot; Among them, scarlet breasted parrot and parrot have wild populations in China. There are two kinds of cockatoos: big cockatoo and small cockatoo. The big cockatoo is the most famous cage bird at home and abroad. It is mainly proced in Sichuan Province of China, eastern Tibet and Northern Yunnan. It is also called big purple breasted parrot and Sichuan parrot