An opaque object does this to light and causes a shadow to form

the answer is c. it will give up it's valence electron to the other atom.

the cell is the smallest structural and functional unit of living organisms, which can exist on its own. therefore, it is sometimes called the building block of life. some organisms, such as bacteria or yeast, are unicellular—consisting only of a single cell—while others, for instance, mammalians, are multicellular.

label a.   prophase

label b. metaphase

label c: anaphase

label d: telophase