A covalent bond is
A. the attraction that one atom has for another atom.
B. the attraction between two atoms, formed by the sharing of electrons.
C. formed between the positive charge of a hydrogen atom in one molecule and the negative charge of a nitrogen atom in another nearby molecule.
D. the attraction between a positive ion and a negative ion.
B. the attraction between two atoms, formed by the sharing of electrons.
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The series of tunnel-like membranes functioning in transport and storage are the ________.
A. Golgi apparatus B. endoplasmic reticulum C. chloroplasts D. mitochondria E. lysosomes
Discuss the major trends in hominid evolution
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Which of the following statements about emerging viruses is false?
A. The stable genome of the SARS virus makes it an unlikely candidate for vaccine development. B. The emerging virus SARS is a coronavirus. C. Ebola is an emerging virus of unknown origins that can have a mortality rate in excess of 50%. D. Hantavirus, which causes a hemorrhagic-type fever, originates in deer mice. E. Emerging viruses are able to "jump" from one species to another.
Which is false about school age 6-12 years sleep?
What will be an ideal response?