Venus will help us understand what happens when the greenhouse effect is really extreme but it's not a really good example of what will happen to Earth because of human activities. Life on Earth would completely die due to the extreme temperatures way before reaching even half of the concentrations of carbon dioxide on Venus. Mars doesn’t really have any greenhouse effects. Mars does have some atmospheric carbon dioxide but almost no atmosphere but the atmosphere it does have is so thin that it cannot keep energy from the Sun. That’s why there are extreme temperature contrasts between day and night and sun or shade. However, most scientists say that Mars used to be warmer in and even had oceans, which means that the atmosphere was also very different. About 3600 million years ago, something happened and the planet evolved towards its current state. studying the planet could tell us what could have caused such a huge change
The Chinese have had restrictions in the amount of children that a family can have, for few decades it was one child, now it is two. Even thought the limit is increased to two children per family, it is a number that will allow the nation to keep it's population on a status quo level.
India, has it worst, the government has not been able to make a solid plan that can be implemented, the wast majority of the population is uneducated, and there's still the pride in having more children, so the population is still growing very fast.
The Kenyan government made a long term development plan, which as a main goal has to achieve a high quality life for all Kenyans that is sustainable with available resources. Also contraceptive coverage, and educating the population with videos, presentations, talks.
When it's beneath the surface, the molten rock is called magma. When it reaches the surface, it erupts as lava, ash and volcanic rocks. With each eruption, rocks, lava and ash build up around the volcanic vent. The nature of the eruption depends on the viscosity of the magma.
Answer:
Oceans have landforms because of volcanic activity.
Explanation:
Oceans are dominated by water, but they are not exclusively covered with water on their surface, but there are also a lot of landforms. The landforms are small in the percentage of the total area, but nevertheless, they can be found in varying sizes and shapes. The reason why oceans have landforms is the volcanic activity.
When it comes to landforms that are located near the edges of the oceans, they tend to be created because of subduction zones. Here we have a rise of magma from the mantle and the creation of volcanic island arcs, like in the case of the Japanese islands. When it comes to landforms that are found deep into the ocean and far away from plate boundaries, the cause is hot spot volcanism. This volcanism occurs above places where there is higher than usual activity in the mantle, and it is such a powerful activity that it breaks through the crust and manifests itself on the surface. An example of this type of landforms is the Hawaii Islands.
Answer:
d. 4 hydrogen nuclei fuse to make 1 helium nucleus
Explanation:
As we know that sun is the largest source of energy and it produce high amount energy by performing a fusion reaction in the core of the sun.This reaction us known as nuclear fusion.In fusion reaction 4 hydrogen nuclei fuse and produce 1 helium nucleus.
So the answer is d.
d. 4 hydrogen nuclei fuse to make 1 helium nucleus
