Answer:
cornell noted
Explanation:
used in middle school and can be helpful for subjects like ela history and science
H20, water has hydrogen bonding because of the H-O linkage. NH3 is a polar covalent compound and has also hydrogen bonding because of N-H bonding. CH4, methane is a non-polar covalent compound, hence the forces existing is London dispersion force.
Biodiversity is the diversity of species in an area, which makes an ecosystem
number 2 is community sense lions ain't everywhere I not sure tho
Sodium (Na) is atomic number 11, so it has 1 valency
While Nitrate (NO₃) has valency 1
Sodium has an extra electron while nitrate needs an extra electron, sodium gives its electron to nitrate and forms a bond,
NaNO₃ (Sodium nitrate)
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