How many proton , neutrons , and electrons are there barium ?

137.327 atomic mass units

hope this helps

Explanation:

56 protons, 81 neutrons and 56 electrons

Explanation:

hope that helps

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

answer; a male inherits only one allele of the x-linked gene controlling hair color;