What is the euglena able to do that other protists cannot?

Euglena is a protist that exhibits both plant and animal characteristics, therefore they have the ability to live a double life. When there is sufficient sunlight, they are green and photosynthetic like plants and they can make their own food. They use their chloroplasts to produce sugars by photosynthesis. Also, in the absence of sunlight, when they cannot produce their food, they consume smaller living organisms such as amoeba like the animals. 

cancer   is   essentially   uncontrolled   mitosis   of specialized cells

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.