Question

Помогите use the suffixes or prefixes to form the worlds 1) a lot of endangered species can ...(appear) from our planet very soon.2)Wooden chairs are not always ...(comfort).3)All ecologian organizations are ...(use)

Answer 1

1). disappear

2). comfortable

3). useful

Answer 2

1. a lot of endangered species can disappear from our planet very soon. (suffix: -appear)
2. Wooden chairs are not always comfortable. (prefix: un-)
3. All ecological organizations are useful. (suffix: -ful)