Question

write 3 useful and 3 harmful effect of protozoa.

Answer 1

Answer:

Hyy mate:-

hers is your answer :-

Useful :-

1. Being simplest organism they are used in laboratories for rearch.

Some protozoa live in alimentary canal of animal and help them to digest cellulos

Harmful :-

1. Giardia causes diarrhoea.
2. Trypanosoma which lives in the blood stream of human being, cattle and wild animals causes a disease known as sleeping sickness.....

I hope it's help you......