Hich of these statements explains the relationship among elements, compounds, and mixtures?

elements are made of compounds and mixtures.

both compounds and mixtures are made up of elements.

mixtures are made of elements, and elements are made of compounds.

compounds are made of mixtures, and mixtures are made of elements.

Which type of microscope would allow the viewer to see ribosomes inside a cell?

Bob camina 200 m sur, luego trota 400 m suroeste, luego camina 200 m en una dirección 30? norte del este. a. dibuje una gráfica de los movimientos de bob. use una regla y transportador. b. use método gráfico y analíitico para hallar el desplazamiento total que bob recorrió. (magnitud y dirección) c. compare los resultados obtenidos por el método gráfico y analítico. (por ciento de diferencia).

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)