Answer:
Lake A: pH = 4.5; Lake B: pH = 7.5
Explanation:
I think that one because if you look on the acid vs base chart acid is from 0-6 and bases are from 8-14 and acids are less toxic, so you would infer that lake A has acid and lake B has bases.
i would have picked the ones closest to 7 ,which is neutral, but I'm not sure that a base can be lower then 7 so I didn't pick answer C
Answer:
Gravitational Force
Explanation:
When a phone is dropped, gravity is pulling it down towards the earths core, so in return the phone will be smashed when it hits the ground.
the black plague took a toll no the population back then and claimed alot of lives
Answer:
an experiment can be valid if its not reliable like something useless or something that worked when it was tested but failed later
Explanation:copy and paste that :)
