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:
for testing differnt cures on animals
Explanation:
As any other ancient civilization, the Sumerians were traders as well. And they had a few good reasons to do this.
Because they traded, their trading partners were less likely to attack them, because it would hurt their economy as well. Furthermore, they didn't produce everything they needed and traded those goods with goods which they produced too much of.
And lastly, through trade they could also get exotic goods which they would have never gotten otherwise.
Answer:
D. how the body keeps its internal environment stable
Explanation:
Homoestasis is any process that living things use to actively maintain fairly stable conditions necessary for survival.
