How does access to sunlight affect the biodiversity of a river ecosystem?
a.
sediment is limited in areas with little access to sunlight.
b.
plant and animal life is limited in areas with little access to sunlight.
c.
algae is more common in areas with less access to sunlight.
d.
biodiversity is unaffected by access to sunlight.

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.

Blank is a rock with a find dark texture that makes up the oceanic crust

The largest unit within which gene flow can readily occur is a