Answer:
Option B,
Explanation:
Proper restraint and handling techniques are used while dealing with animals in laboratory. These techniques ease the process of dealing with animals and must be practiced on regular basis even when there is no procedure being performed.  
Unlike other animals cat is the most co-operative animals and it is usually dealt by restraining the body be one hand and head by other hand. Cats can also be restrained by holding the scruff with one hand and then gently holding the hind limbs followed by stretching it.
Hence, option B is correct.
 
        
             
        
        
        
Fungi during their life cycle have a haploid phase.
Also have a diploid phase.
Human somatic cells are diploid. (Blood, skin, Muscles, even zygote)
Human sex cells are haploid. (Eggs and sperms)
Hope this helps.
        
             
        
        
        
The ozone layer is the answer!
        
             
        
        
        
Answer:
Explanation:
B.  có nhiều hệ sinh thái khác nhau trên trái đất. mỗi hệ sinh thái có một đặc tính riêng và chúng có thể kết nối, tác động qua lại với các hệ sinh thái khác
 
        
             
        
        
        
Answer:
B
Explanation:
Warm because land gains heat faster than water when heated by the sun. The heated land then transfers the heat to the atmosphere. The air mass is dry becasue a continent is mainly land and very little water (unlike oceans). There is, therefore, very little moisture in the continental tropical air mass.