Which steps are part of the seafloor spreading process ? check all that apply !

The correct answers are:

- New oceanic crust is created;

- Volcanoes erupt and produce more crust;

- Old crust is pushed away from ocean ridges;

When we have a divergent plate boundary, the plates move away from one another. As they move away, they leave a gap behind them, and lot of cracks in the thinner crust left behind. The high pressures from the mantle manage to push upwards the magma very easily through that crust and cracks. As the magma reaches the surface, it creates underwater volcanic activity. The magma comes out on the seafloor and quickly cools off. As it cools off, it creates new oceanic crust, thus the oceanic ridges. Because of the movement of the plates, and the constant new creation of new crust, the old crust is pushed away from the oceanic ridges.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.