9) Hundreds of years ago, it was believed by many that our solar system was Geocentric. This means that Earth is at the
center of the solar system, with the Sun and other planets orbit around it. Today, the solar system is now thought to
be Heliocentric.
What does this mean?
A)
The Sun and other planets orbit Earth.
B)
Earth and all the other planets orbit the Sun.
The other planets orbit Earth, and Earth orbits the Sun.
D)
The Sun orbits Earth and the other planets orbit the Sun.

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.

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement

Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.