Please help me iv'e been stuck on it for 5 hours and it's science please help me and this better be worth it because i haven't been on brainly and i don't have much points rn so can someone please help me thank you

Please help me ive been stuck on it for 5 hours and its science please help me and this better be worth it because i havent been on brainly and i dont have much class=
Q&A Education