The Spanish scientist should bear in mind that the production of eggs of salmon is dependent on lots of factors apart from the temperature. These factors include type of water, nutrients, etc. If these factors are also set constant then, the scientist can expect the same result from his friend.
The soil has to be not too acid or not too basic
The tides would become weaker, but we would not lose them completey because we would still have the tides caused by the Sun.
D.three tissue layers I think
