The Cambrian period was important because it marked a dramatic burst of evolutionary changes in life on Earth. I<span>t is also the time when most of the major groups of animals first appeared in fossil records.</span>
<span>A. No learning is necessary. In order for a behavior to be called innate, the action must be instinctively done towards a defined stimulus</span> without previous experience or practice. An example of innate behaviors is a young kangaroo (joey) climbing into its mother's pouch right after it was born.
The Calvin cycle of photosynthesis starts when the energy of light is processed to chemical energy within the cells of plants. The ATP molecules created power the Calvin cycle. The Calvin cycle utilizes energy to create carbohydrates from h20 and co2.
They are both are types of explanations.
