I am not sure but I am guessing carbon and nitrogen :)
Polystyrene is a good insulator as it has small air bubbles trapped inside of it. This means heat energy cannot flow through them therefore it is an effective material for keeping honeybees warm in the winter. Hope this helps :)
One of the many changes are the seasons, ex Winter, Spring, Summer, Fall
Answer:
Atoms are electrically neutral as a result of having an equal amount of positive (due to the protons) and negative (due to the electrons) charges on it.
An ion generally is an electrically unbalanced atom (i.e an atom with a net charge on it)
A negative ion called an anion is produced when an atom gains an extra electron from a neighboring atom, giving it an extra negative charge. This can be produced by ionization with a radioactive radiation or simply by dissolution.
A positive ion is called a cation and it is produced when an atom loses electron to a neighboring atom. The loss of this electron causes the positive charges to outweigh the negative charges in the atom. Cations can be produced by radioactive radiation ionization of an atom or by simple dissolution.
The subatomic particle that is negative is the 'electron'.
Answer:
D&A
Because the Digestive system breaks down food( which starts in the mouth because of the eynzemes) Then is broken down in the stomach (mechanical digestion) then the water and nutrients are absorbed in the small intestine, in the large intestine the rest of the nutrients are absorbed. Also, I just did the last test and finished this section in science