Which of the following statements about elements and compounds is accurate?
A. Elements are many different types of atoms together but
compounds are just one type of atom.
B. Elements are pure substances that cannot be broken down
physically but compounds are pure substances that can be broken
down physically.
C. Elements are not found on the Periodic Table but compounds are
found on the Periodic Table.
D. Elements are pure substances that cannot be broken down
chemically but compounds are pure substances that can be broken
down chemically.

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

Ais a group of individuals of the same that exist together in the same place at the same time