2. Por que los investigadores creian que la carticula que quedaba después de la emisia
in de electrones como rayos catódicos tenia
que ser positiva?

Answerstudying coal cumbustion as an energy source;

Large asteroid and comet impacts. because they can have a huge impact on the environment, such as a loss of land, and crust on the earth with the big holes they produce. on the other hand, volcanic eruptions can also cause change within the environment by producing land, but im actually not quite sure which one would be a better answer, hopefully you read this and didnt just flat out choose the first sentence i have spoken! your welcome~

Energy is a force, and just like any other, it has the effect of gravity. a bond holds things together, so the greater the force, the stronger the bond. this means that more energy equals stronger bonds. the greater gravitational force will strengthen the bonds, so larger atoms with more gravitational force will greater stronger bonds. i believe this is the correct answer, sorry for the incorrect one.  hope this ! answer: a