Which best describes arthropods ?
a. spiny skin, water filled veins, an internal symmetry, and tube feet
b. soft-bodied invertebrates with a protective shell and muscular foot
c. jointed body parts, bilateral symmetry, and segmented bodies
d. radial symmetry invertebrates that use stinging cells to capture prey and defend themselves

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

explanation:

0.07 g/cm³

1.37 g/cm³

how important do you think an instrument is to the musician who plays it?