How does nectar provide energy for a humming bird

Nectar contains a high concentration of sucrose (sugar).

When hummingbirds ingest the nectar, their cells use oxygen to convert it into carbon dioxide and water.

The oxidation of sucrose releases a large amount of energy, which the birds can use for flapping their wings, etc.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)