Answer:
you say your greeting based on the time of the day
Explanation:
Buenos dias = good morning
Buenas tardes = good afternoon
Buenas noches = good night
some of these are feminine, so you put type "buenas" instead of "buenos"
incorrect
no nos dejas translates to not let us
Answer:
Nosotros no nadamos en el mar
Explanation:
You're including yourself
calculates the concentration of hydronium in acid rain if the pH is 4.35
