;urgent.

how do both jetties and seawalls manage beach erosion?

1): both use plants to keep sand on the beach.
2): both bring sand to the beach from offshore.
3): both are hard structures that reduce erosion caused by waves.
4): both provide flood protection in the event of high waves.

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.