In the human body, the circulatory system transports and deliver substances. Within the cell, which organelle performs a similar function? *
Mitochondria
Nucleus
Cytoplasm
O Endoplasmic Reticulum

Which plant has a visible leaf modification that will it conserve water in extremely dry environments?

__1__ is a climate cycle where the temperature of the __2__ ocean changes because of movements of air and ocean currents. during this period, the trade winds in the south __3__ , causing the __4__ water to move from the __5__ region to the __6__ region. 1) el nino or the monsoon 2) atlantic, indian, or pacific 3) reverse, strengthen, or weaken 4) cold or warm 5) eastern or western 6) eastern or western

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d