Question

0.3 Put a W markagainst the correct and (xlagainst the wrong statements
(3 x 4 =2]
(a) Plants which synthesize their food themselves are called saprotroph.
(b) Anacrobic bacteria digest animal waste produce biogas.
(c) Tooth decay is caused by the presence of bases.
(d)Dark colours are good radiators of heat,​

Answer 1

Answer:

Explanation:

Change A and change B both are chemical changes.

As both the reaction are irreversible, they lead to the formation of new substances.

          Animal waste  

anaerobic

bacteria

​  

 Bio gas

                                 

         Bio gas    

burning

​  

CO  

2

​  

+ other substance.