Each sieve tube element is normally associated with one or more nucleated companion cells, to which they are connected by plasnodesmata (channels between the cells). Each companion cell is derived from the same mother cell as its associated sieve tube member. Sieve tube members have no cell nucleus, ribosomes, or vacues. Thus, they depend on companion cells to provide proteins, ATP, and signalling molecules
The answer is the bladder
Answer:
The 14°C sample is more dense than the 25°C sample.
Explanation:
Warm water rises, cooler water falls. Warm water is less dense than cooler water. The actual density of water changes about .4% as the water temperature changes from near zero at 0°c up to about 30°c. That may not sound like much. However, that is enough density change for cold water to flow below warm water. This can have an impact on ocean currents and other phenomena in the ocean.
A positive charge i think. not sure though.
good luck
1.Abbasid
2.Justinian's rule i believe
<span>Make me brainliest please </span>
