Answer: Length, Shape and density of an object do not necessarily determine the shape of a crater
Explanation: a crater is a rough opening on a solid surface, it might be circular or any shape. The major factor that determines the shape of a crater is the mass and velocity of the impactor like the meteorite. When an impactor hits a solid surface, it breaks out in all director irrespective of the shape of the impactor. We have simple and complex craters depending on the impact strength.
The answer would be a mantle
I would say the whale and the dolphin are the most closely related.
The process in which the plant's prepare there food in the presence of light is called photosynthesis. the respiration in which the breake down of sugars into a form which cell can use as a energy is called cellular respiration.