What attracts an insect to a flower

Which part attracts insects to the flower?

Plants also use smell to attract an insect to their flowers. Some flowers like this cornflower are brightly coloured to attract insects.

Plants also produce scents to attract insects, probably as a way to advertise that food—nectar and pollen—is available. As the insect is drinking nectar or gathering pollen, it moves around in a flower and pollen grains, which sit atop long thin stalks in the flower's center, collect on its legs or underside.

Explanation:

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when it's short and dry.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.