If an electrical neutral atom has 4 protons and 4 neutrons and it gains 2 electrons what is its electrical chargr

What surface does the epithelial tissue cover? a. the surface of the body b. lines internal organs c. forms many glands d. all of the above

According to piaget’s stages of cognitive development, the child does not differentiate between self and other objects. the child repeats rewarding activities, discovers new ways to get what he or she wants, and may have imaginary friends. which period is described?

Many scientists like to study cosmic objects in the uv spectrum because objects giving off large amounts of uv light are typically and