Which statement is true? (1) There is no change over time in a cyclical system.
(2) Directional changes represent thresholds being passed.
(3) Abrupt changes are typical of non-linear systems.
(4) Episodic changes occur when an ecosystem has low resilience.​

Name 5 inland waterways of australia

How do ocean currents affect temperature? check all that apply. they carry cold water from the poles to the equator and cool air over land. they flow north and then south below the equator. they flow south and then north above the equator. they move warm water from the equator to the poles and heat air over land. they move east to west and create prevailing winds. they move west to east and create seasonal winds.

Which of the following is the main purpose of using an anchored network of booms which funnel debris to a collection area?