When it is summer in the Nothern Hemisphere, what season is it in the Southern Hemisphere? A. Spring
B. Summer
C. Fall
D. Winter

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.

As an asteroid comes close to earth, it's name will change to? apex