(Q).
Fact 1: If a neutral atom loses an electron then an atom with a negative charge will be formed.  Fact 2: Atoms are the smallest units of elements.  Given the two facts above, answer the question "If the smallest unit of an element is neutral and it loses an electron what charge is formed?" with the following options:  - positive  - nucleus  - negative  - energy  - Energy.  - iron  - electrically  - uncontrolled
(A).
negative


(Q).
Fact 1: Tunicates reproduce sexually.  Fact 2: Tunicates are sea creatures encased by tough membranes, reminiscent of tunics.  Given the two facts above, answer the question "Sea creatures encased by what reproduce sexually?" with the following options:  - barnacles  - refraction of light  - layers of fat  - Epidermis  - tough membranes  - ocean water  - gastropod shells  - epidermis and dermis
(A).
tough membranes


(Q).
Fact 1: Agraduated cylinder is used to measure volume of a liquid.  Fact 2: Volume is typically measured in liters or milliliters.  Given the two facts above, answer the question "What could be used to to measure how many milliliters something is?" with the following options:  - solid, liquid, gas  - A graduated cylinder  - objects that have mass  - an electron microscope  - The bending of a ray of light  - deoxyribonucleic acid  - a hydraulic system  - microscope
(A).

A graduated cylinder