What’s the best answer?

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts

Ibelieve its because the stove is a cleaner burning fuel

Hello.the answer is  hydrosphere, geosphere, and biosphere  have a nice day