muchas

• Det

  feminine plural of mucho

• Pron

continúan

third-person plural present indicative of continuar

en

1. in, at, on
2. in (a time)
3. in (a language)
4. used after some verbs and translated by various prepositions in English
5. in (in various expressions)

busca

• Noun

  search (an attempt to find something)

• Verb

de

• Noun

  The name of the Latin-script letter D/d.

• Prep

su

1. Apocopic form of suyo his, her, its, one's, their, your (formal)
2. Apocopic form of suyo his, her, its, one's, their, your (formal)
3. Apocopic form of suyo (“your”)

familia

1. family (a nuclear family)
2. family (a grouping of things possessing common characteristics)

biológica

feminine singular of biológico