Why are polyandrous mating systems more rare than polygynous matings?
only males are capable of multiple rounds of reproduction within a single breeding season.
only females care for the young.
females usually experience more intrasexual selection pressure than males.
females usually devote more energy to offspring production and development.

Many body systems work together for proper functioning of the body and to maintain internal homeostasis. the works to break down food eaten before exercising. the takes in the nutrients obtained from the food. the body sweats as a mechanism to cool off, because the is working to flush out toxins.

In which ways are mercury and venus similar?

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?