Answer:
1. in the Northern Hemisphere the vernal equinox falls about March 20 or 21, as the Sun crosses the celestial equator going north. In the Southern Hemisphere the equinox occurs on September 22 or 23, when the Sun moves south across the celestial equator.
Explanation:
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Answer:
Element And Antomic Number
Cảm ơn tôi sau và theo tôi
Answer:
C. NH₃
Explanation:
This buffer is formed by a weak base (NH₃) and its conjugate acid (NH₄⁺) which comes from the salt NH₄Cl. When an acid is added (hydrobromic acid) it is neutralized by the basic component of the buffer, according to the following equation.
NH₃(aq) + HBr(aq) ⇄ NH₄⁺(aq) + Br⁻(aq)
B) bacteria
generally less developed organism perform asexual method