How often do tides rise and fall?
a. once a day
c. every 14 days
b. twice a day
d. every 24 h, 50 m select the best answer from the choices provided a b c d

Maria is going to a hiking trip this weekend. she has been busy shopping for the trip. which of these items that she bought are a want for her?

What processes does carbon cycle through the biosphere?

What effect has the drug trade had on some governments in middle and south america? a. it has funded political instability. b. many nations have created democratic governments. c. many governments have allowed the drug trade to fund local programs. d. it has funded political stability.