Pliz, answer my question,

1.Annelida consists of a hydrostatic skeleton whereas Arthropoda consists of an exoskeleton made up of chitin.

2.They are sessile and sedentary and grow like plants. They contain pores called ostia and osculum.

Hey... Sorry I know only these two.

you can change by someone having a negative opinon of you in many ways for example thi can lead to depression and taking of ones life also known as sucide this effects there self esteem and ego in a negative way making them feel sad depressed and stressed causing them to act gloomy and sad if this continuses this can lead to self harm or much worse things.

hope i .

your blank of voice often reflects your feelings emotion and thoughts