Hey there!
I believe answer is B2 or Beta 2
        
             
        
        
        
Answer:
Temperate grasslands have <u>few trees.</u>
Explanation:
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.
 
        
             
        
        
        
Answer:
Your body uses oxygen to get energy out of the food you eat.
Explanation:
Oygen breaks down sugar in cellular respiration
 
        
                    
             
        
        
        
<u>Answer:
</u>
The day one starts with the first day of your periods when the blood and tissue lining the uterus (womb) break down and leave the body is considered to be the '1st day' of the 'female reproductive system'.
<u>Explanation:
</u>
- The periods, that is the 'first day of female reproductive system' starts during puberty and stops 'permanently at menopause'. 
- The menstrual cycle starts with the 'first day of bleeding', which is counted as 'day one'. 
- The menstrual cycle stops just before the "next menstrual period". Menstrual cycle normally ranges from 25 to 36 days. 
- The periods may last anywhere from '3 to 8 days', but '5 days' is average.