The yellow beams in the model represent equal amounts of radiation coming from the Sun. A. All parts of Earth’s surface get sunlight at the same angle and of the same intensity.
B. The regions near the poles get the most-intense and most-direct sunlight.
C. Sunlight is more spread out at the poles than at the equator.
D. Higher latitudes get less-direct sunlight than latitudes near the equator.

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1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

1. list three scientific reasons cockroaches may fly.

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.