When an ecosystem changes, the results are . a. all positive
b. all negative
c. neither positive nor negative
d. mixed between positive and negative

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.

What is the y-coordinate of the point that divides thedirected line segment from j to k into a ratio of 2.3? -6-557

Where does the availability of water pose the greatest problem