Gustav Mahler would be my answer. Strauss was also composing during the late 19th and early 20th but Mahler created more of a fusion between the two.
An orchestra is defined as a large instrumental ensemble typical of classical music. An orchestra features bass, brass, strings, woodwinds, and percussions. In the list given above, the section that is not one of the four groups in the orchestral palette is the voices. The answer would be "voices".
B) herman von helmholtz
The trichromatic color theory<span> began in the 18th century, when </span>Thomas Young<span> proposed that color vision was a result of three different </span>photoreceptor cells<span>. </span>Hermann von Helmholtz<span> later expanded on Young's ideas using color-matching experiments which showed that people with normal vision needed three wavelengths to create the normal range of colors. Physiological evidence for trichromatic theory was later given by </span>Gunnar Svaetichin<span> (1956).</span>
<u>Durante la guerra, los británicos y franceses trabajarían para mejorar la confiabilidad y efectividad del tanque. Continuarían produciendo 6,506 tanques entre ellos.</u>
