Having studied mixtures at school, Daniel wanted to investigate how to separate the parts from different mixtures. He knew that the individual components of a solution kept their properties. So, Daniel gathered his materials and began to separate some of the mixture combinations. Which of the following tests could he perform to separate different kinds of mixtures? Choose the three statements that apply. A. Use a cup of salt and dissolve it by adding water.
B. Use a magnet to separate the metal parts.
C. Use a hotplate to evaporate the liquid.
D. Use a filter to separate large particles.

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

the actual answer was 160934

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