Why the eggs of silk moth are kept below 18 degree Celsius in winter?

Plants that have reproductive structures called cones are?

In the water cycle , when does water undergo a chemical change

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass