Vascular System of Plants Label the parts and answer the questions.

The questions at the bottom are hard to read so here they are:

1.) Between the xylem and phloem in the stem is a layer of cambium tissue. What is the role of this tissue?

2.) What is the role of both Collenchyma and the sclerenchyma tissue, found within the vascular bundle?

Thank you!!!

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.