Single-celled organisms with cell walls do not have contractile vacuoles. Suggest why.

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration

Warmer ocean surface water would most likely be found near