Why are flowers important to plants?

they attract birds and insects to assist in pollination.

they protect the reproductive parts of the flower.

they are ornamental.

they are a food source.

they produce new flowers.

What do you think car designers do if the damage caused by a crash test is too severe?

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.