Answer:
Primary succession occurs following an opening of a pristine habitat, for example, a lava flow, an area left from retreated glacier, or abandoned strip mine. In contrast, secondary succession is a response to a disturbance, for example, forest fire, tsunami, flood, or an abandoned field.In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.
Explanation:
The Crossing Over only occurs in the meiosis on prophase I and metaphase I
These are similar because they both included desired characteristics. They are different because artificial selection has to do with humans being involved. where natural selection is with out humans being involved and is life or death.
2 because the 1st energy level can only hold 2 electrons and the 2nd holds 4
B-Kidneys
The kidneys act as filters that strain urea and excess salts from the bloodstream to release them in the urine.
