Some species form social groups only with members of the same gender. for example, elephants form groups with only females and their offspring. once the male offspring reach a certain age, they leave the group and become solitary. which is a benefit of this type of social group structure? females do not have to compete for a mate. male offspring can belong to more than one social group. adult males can mate with females in several different social groups. females are the only ones responsible for taking care of the offspring.

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits

What drives the atp synthase reactions that produce atp

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.