12.) Rutherford predicted that an atom has a dense core called a 13.) The class of elements that makes up most of the Periodic Table are the
14.)
is credited with the 1" Atomic Model of an atom.
15.) Elements found in the same in the periodic table share similar chemical and physical
properties.

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.

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.

50 points! which of the following is an inference? a burning candle is extinguished when it is covered with a jar. the candle burns longer than expected in a jar that has a plant in it. a plant lives longer than expected in a jar that has a burning candle. there is more oxygen in the jar because there is a plant in it.