What makes seas especially vulnerable to pollution?
a. high fish populations
b. erosion
c. little water exchange
d. overfishing

Plz answer ! find the alps. what countries and country borders intersect this major mountain range? which borders seem to be defined by the edges of the mountains? which borders seem to be defined by the edges of the mountains? which borders cut across the mountains?

What are the 28 countries in the eu?

Which planets are likely to have the strongest gravitational fields?