Answer:
Explained below
Explanation:
In physics, we know that waves usually change direction when are refracted or when they penetrate layers with different densities.
Therefore, when a seismic wave penetrates penetrates the boundary of the earth's interior, part of it will be sent back and part will be transmitted into the medium as refraction occurs. When we record the reflected and refracted ray, it enables the calculation of the position of major boundaries in the Earth's interior. This also helps in providing information about the solid & liquid character as well physical properties of the various layers in the medium.
The true statements are (A)They are valuable - resources from our planet is very valuable because it is where our things come from, (B) They are renewable - resources are renewable and recyclable and lastly (C) They do come from ores - some come from ores specially crystal type of resource.
Arctic ocean has a little biodiversity as compared to the other oceans. It is completely covered with ice in winters and partly covered in other seasons. Due to very low temperature, the natural life is very limited in the ocean. Moreover, global warming is further damaging its ecosystem.
