The answer is A. and B.
Let's look into the options one by one:
A. pressure and heat built up in the magma chamber
This is true as the pressure and heat built up is what cause the magma to be pushed out of the chamber through the vent. The higher temperature it is,the more it expands and the more likely it is to erupt.
B. plate tectonics and subduction
This is also true as volcanicity is caused by plate tectonics such as subduction. When the plate bends, cracks are formed which coul then be filled by magma and cause fissure eruption, afterwards forming volcanoes.
C. ground swelling and foreshocks
These are the consequences of volcanic eruption but not the causes and therefore is not true.
D. foreshocks and aftershocks
These are as well the consequences of volcanic activity like above and is not true.
Therefore the answers are A. and B.
Hope it helps!
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks.
D, motion of tectonic plates
Answer:
B. elderly people
Explanation:
I don't know if this counts but personally growing up in an Asian community, I think it's safe to say we pretty much worship our elders and if we didn't we'd be in big trouble.
So why is it B.?
Respecting the elderly is an ancient Asian tradition, and is also a part of daily life in terms of respect. B. falls into both categories.
Why is it not the others?
Japanese have just incorporated urban life and trendy fashion into their life and not any sooner than this generation so not A.
Outsiders is not very relevant to the answer because if you're an outsider, so be it so I wouldn't say C.
Asians think more for family than theirselves which is why it wouldn't be D.
