Answer:
d The chemicals had to be applied to a plate, in the dark.
c The photograph had to be made and developed while the chemicals were still wet
Explanation:
Darkrooms used red lighting to allow photographers to control light carefully, so that light-sensitive photographic paper would not become overexposed and ruin the pictures during the developing process
This meant that the photographer had to have a dark room with him, as well as various dangerous chemicals that were necessary for the development of the photo.
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En Pangea los dos continentes que tienen el ajuste de costa más obvio son América del Sur y África
<h3>¿Qué era la Pangea?</h3>
Pangea es un término científico para referirse al supercontinente que existió en la Tierra entre las eras paleozoica y Mesozoica. Este supercontinente se caracterizó por agrupar la mayoría de la superficie emergida de esa época.
La Pangea fue el resultado del movimiento constante de la litósfera terrestre y las placas tectónicas. Más adelante (cerca de hace 175 millones de años) este supercontinente se factura y comienza a dividirse estableciendo la forma actual de los continentes.
Una de las formas para llegar al estudio de la Pangea es la similitud de las formas de las costas de los continentes, en el caso de América de sur, su costa oriental tiene una forma cóncava y la costa occidental de África que tiene una forma convexa permiten inferir que en algún momento estuvieron pegadas porque encajan perfectamente.
Aprenda más sobre Pangea en: brainly.com/question/1867605
<span>In the spoils system, elected officials appointed friends and supporter to government jobs, regardless of their qualifications. By the Gilded Age, the government was filled with dishonest, unqualified employees. This system was so appealing to politicians because it ensures a loyal group of followers. Both parties handed out jobs to pay off the people who got them elected. The system led to corruption when dishonest appointees used their jobs for personal profit.</span>
Napoleon Bonaparte became the first consul of France and that brought a revolutionary change to France and its culture.
<h3>Who was Napoleon Bonaparte?</h3>
Napoleon Bonaparte became the first consul of France in the year 1799 and served till 1804.
After becoming the First Consul, Napoleon Bonaparte initiated various reforms like changes in the education system of France, developing a civil code-named Napoleonic code, changing the taxation system of France, making a centralized French government, and advancements in the military and civil service sector.
Therefore, the revolutionary changes came when Napoleon Bonaparte became the first consul of France.
Learn more about Napoleon Bonaparte in the related link:
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