You look for shells when you visit the beach. However, if you're hiking in the mountains and you find shells by accident, you know that
A) the mountain has a lake nearby.
B) the mountain was once under the sea.
C) some prehistoric sea creatures could live on land, too.
D) the shells were blown by powerful winds to the mountain top.

There are main groups in the modern periodic table of elements

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years