Answer:
Africa is the region that has population growth based on a high total fertility rate.
Explanation:
On this graph, we can see that the predictions for the global population are that it will continue to grow. That is not to say that there will be proportional growth in all regions though, as there are differences from one region to another. There's one region that will have exponential growth, one that will have minor growth, two will stagnate, and one will actually experience a slight decline.
The only region that will have a big population growth is Africa. The reason for this is that this region is predicted to retain its very high total fertility rate. With the living conditions gradually improving over time, especially the healthcare system, this will lead to big decline in the mortality rate, which will even more pronounce the large fertility rate, so the population will rapidly grow.
Where tectonic forces occur, earthquakes occur due to vibrations caused during impact of tectonic plates. Volcanoes are formed when lava forms are exposed during impact of tectonic plates.
Answer:
- increased levels of human-produced carbon dioxide have enhanced the greenhouse effect
- volcanoes are the largest source of greenhouse gases
Explanation:
The greenhouse effect is cause by the presence of greenhouse gases in the atmosphere, such as the carbon dioxide and methane. These gases have the ability to trap the heat into the Earth's atmosphere in much greater percentage, resulting in warming up of the atmosphere, thus the global climate as well. The biggest source of these gases are the volcanoes, being responsible for pretty much all of the greenhouse gases in the atmosphere for most of the geological history of the Earth. Despite still being number one, the volcanoes get assisted by the human activity in the past two centuries when it comes to greenhouse emissions into the atmosphere. By using the fossil fuels to produce energy, which means burning them, the humans have constantly been increasing their contribution in the amount of greenhouse gases released into the atmosphere. If that trend continues with this tempo, we might experience more dramatic climate change in the near future which can have been consequences.
Answer:
The whole flock runs away as a single group.
Explanation:
The sheep naturally leaves in rugged highlands and is well adapted for that terrain, and even there aren't many predators, the few that are present are also well adapted to the conditions and have mastered hunting them. In most cases, the best defense for a flock of sheep would be that they all run away as a single unit. The reason why this would be the best defense in most cases is the fact that a predator would not be able to single out a target, and also trying to attack a flock while running may end up with bad injuries because of kicks with the hooves and hits with the heads and horns.
Now while this is usually the best scenario, it needs to be taken into consideration the type of predator in question. If it is a single wolf, then the ram can stand up to it as it outweighs the average wolf by far, and has more than enough weaponsa and power to take it down and protect the heard, so standing as a single unit will work in this situation. If it is a snow leopard in queastion, a ram as well equiped and powerful as it is will still not be able to fend off the danger, so by protecting the heard will end up as the victim because of the immense strength, agility, and numerous weapons of the predator.
