A chemical reaction is the only way to separate an? element

pure substance

mixture

solution

Mark this and reti

Over-the-counter drugs commonly abused by teens and young adults include a. pain relievers, muscle relaxants, and sleep aids. diuretics, vitamins, and herbal supplements. b. cough and cold medicines and diet and sleep aids.

How is salinity measured

Heat transfer by conduction occur when molecules a. flow as currents through liquids b. form waves that travel through space c. become less dense and rise d. collide with other molecules

A nitrogen atom contains seven protons, seven neutrons, and seven electrons. Make a labeled drawing of the structure of a nitrogen atom. How can this atom become stable?

Dichotomous keys ask A. open-ended questions about animal behavior. B. open-ended questions about easily observable characteristics. C. yes-or-no questions about animal behavior. D. yes-or-no questions about easily observable characteristics.

Holly has difficulty hearing but also has a problem identifying the direction and origin of a sound. holly is experiencing difficulty with

Combining dna from different organisms or different locations of a given genome that would not normally be found in nature is the definition for

Where does an eagle get the energy it needs to grow and to a fly? A. from the animal eats B. from the trees it nests in C. from the air it flies in D. from the water at fishes in

Describe how the motion of Earth is affected by the sun. Be sure to include the direction of any force you identify and the shape of the path that results.

For a person to be diagnosed with major depressive disorder, he or she must have experienced a significant depressive episode and depressed characteristics, suchas lethargy and hopelessness, for at least