A Euglena (like many other Potists i.e. Amobas and Parameciums) have a Contractile Vacuole which it uses to excrete excess water and remove wastes.
waste waste waste
They remove waste from their anus in solid feces.
protists
Mammals
to help with photosynthesis
the kidneys remove waste from the bloodstream.
The red pigment on euglenas that helps the organism find sunlight is not nice
protists
Euglenas are freshwater organisms that can be found in various aquatic habitats such as ponds, lakes, and rivers. They are known for their ability to thrive in both freshwater and brackish environments. Euglenas are commonly found in areas with organic matter where they can use sunlight to photosynthesize and obtain nutrients.
Organisms remove waste so that it doesn't build up or harm their body.
Yes because they are protoctists.
To remove waste products.