The vascular cambium
a. is part of a plant's secondary growth
b. produces secondary phloem and xylem tissue
c. increases in ring size each year
d. all of the above

__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

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

The transport tubes for food coming down the plants are called?