Algae is more like plants because they don't move unless something moves them and protozoa is more like animals because they move around and eat other living organisms
There are lots of different kinds ofo algae. There are Chlorophytes (green algae) Rhodophytes (red algae), chrysophyta ( golden/brown algae) and lots more!
Bacteria and protozoa are different in many ways one of them is feeding.
Protozoa feed on bacteria and other smaller microbes by engulfing then digusting them. Bacteria feed on dead animal and...