Echinoderms I believe! Good luck, hope this helps!!
        
             
        
        
        
Vaccines can help protect against viruses by triggering the production of _____.
"antibodies"
Hopefully this helped hun ! Have a good day!
        
                    
             
        
        
        
Answer:
d. They produce methane, a greenhouse gas.
 
        
             
        
        
        
Answer:
The correct answer will be
1. Bacteria:<em> Lactobacilli </em>
2. Fungal: <em>Candida albicans.</em>
3. Protozoan:<em> Trichomonas vaginalis</em>
Explanation: 
The vagnitis is the inflammation of the vaginal caused by the microbes growing in that area.
On the basis of the microbes, there are three types of vagnitis which are:
1. Bacterial vagnitis: caused by the bacteria like<em> Lactobacilli </em>which overgrow in the vagina after sexual intercourse.
2. Yeast infections: caused by the fungal species which outgrow like <em>Candida albicans</em>.
3. Trichomoniasis: caused by the one-celled parasite called <em>Trichomonas vaginalis</em> which is transmitted during sexual intercourse.
Thus, the selected options are the correct answer.