Introduction
Life at space
The term "evolution" usually refers to the biological evolution of living things. But the processes by which planets, stars, galaxies, and the universe form and change over time are also types of "evolution." In all of these cases there is change over time, although the processes involved are quite different. As the universe expanded, according to current scientific understanding, matter collected into clouds that began to condense and rotate, forming the forerunners of galaxies. Within galaxies, including our own Milky Way galaxy, changes in pressure caused gas formed clouds, also known as stars.
An opinion essay
Do you think that space exploration is worth it ?
Space exploration is an expensive business , and many people believe that is not woth it, due to the time, cost and danger involved. However, I am definitely in favour of exploring space, for several reasons.
In the first place, I belive that exploring is important because scientists have discovered many interesting things about our planet and others. Unless we send astronauts and satellites to space, we won´t learn more about the universe. Furthermore, much of the technology we have on earth today was invented because of space exploration, such as solar panels and mobile phone cameras. In my opinion, these items would not have been created if NASA had not spent time and money developing them. Finally, we don´t know what will happen on Earth in the future. If we needed to leave Earth due to a terrible war or an epidemic, for example, space would be a good place to go.
In summary, it is my opinion that space exploration is vital, and it is a valuable use of time and money. What do you think ?
Are we alone in the universe ?
It comes down to whether intelligence is a probable outcome of natural selection, or an improbable fluke. By definition, probable events occur frequently, improbable events occur rarely - or once. Our evolutionary history shows that many key adaptations - not just intelligence, but complex animals, complex cells, photosynthesis, and life itself - were unique, one-off events, and therefore highly improbable. Our evolution may have been like winning the lottery ... only far less likely.
The perfect guide to know all about Earth
Earth - A visitors guide
- To survive, humans need food and water - but if we eat too much food, we become ill.
- Mos of plants here need water, food and light. If you keep a plant in the dark, it wont grow.
- we love being oustide in the sun, but if we don´t use prote
- ll need a biger place to live.
- A lot of other species are near extinction. If we don´t prote
- ction, our skins gets burnt.
- There are a lot of us here. If population grows more, we wict them, they will become extint. Some species have already gone, like dinosaurs 65 million years ago.