The sun contains about percent of the mass of the solar system.

Which situation is an example of competition that could be found in the grassland? a. two lion populations utilize the same gazelle population as their main food source b. deer eat berries and their droppings seed new areas, creating new berry bushes c. two shark populations utilize the same fish population as their main food source d. lack of sunlight due to changes in the seasons restricts the growth of certain plants

Crossing over is a method of (blank)?

What term describes a doctor who becomes a specialist by meeting standards beyond those of getting a license and passing a test in the specialty area?