Althogh options are not given for this question, here is what I can speculate based on provided limited information.
Temperate grasslands have few trees and large shrubs (mostly absent). Here, <u>grasses are the main vegetation</u>. A major reason behind this is the <u>low average annual precipitation</u> which doesn't allow bigger plants to survive.
For the second part I can say that temperate grasslands have primary vegetation (grasses) whereas other biomes have higher plants as well.
<span>This would be recorded as an anore.ctal fistula. This type of injury develops as an abnormal passageway that allows fecal material and other discharge to be passed between the a.nal canal and perianal skin. This type of opening can lead to discharge and pain in the a.nal area.</span>