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.
It is better for the whales to go where the whales have the ability to dive longer and deeper to find cooler water.
Option A because phloem is concerned with transport of prepared food materials(carbohydrates) from leaves to other plant parts ,so if it get damaged the plant naturally dies
