<span>There are three types of seismic waves. These are classified on the basis of their penetration in the earth's surface and their arrival to seismographs. First are primary waves, which arrive first and penetrate the deepest. Then are the secondary waves, which penetrate less and arrive after primary waves. Finally are the surface waves, which do not penetrate the earth's surface and arrive the latest.</span>
I would guess option B, but take a second opinion
<span>Adenintriphosphate, also known as ATP, is the main energy carrier of the cell. This occurs because it is a molecule responsible for providing the energy for DNA synthesis; in fact, most metabolic reactions that require energy are associated with ATP and that energy is produced there.</span>
<span>The third option is correct, seed coat, stored food, embryo. The coat is what protects the inner parts from outside infuences, while the food is the nutrients that the seed uses when growing and developing. The embryo will eventually become the new plant that grows out of the seed. Seeds usually fall from things like pinecones on the ground near the original tree, which is why coniferous forests are usually very dense.</span>
