Which process must occur first before any cell division can take place?

a. differentiation
b. embryo formation
c. blastocyst formation
d. fertilizatio

Tengo un montón de materias. primero, tengo biología a las ocho y media. es una clase muy interesante y la profesora es divertida. después tengo la clase de inglés. no me gusta. es difícil. tengo que escribir mucho. el almuerzo es a las once y media. siempre tengo hambre a las once. por la tarde tengo arte, historia y matemáticas. mi materia preferida es la historia porque la historia es como (like) un libro de aventuras. how many classes does elena have? a. 4 c. 6 b. 5 d. 7

Match each topic to the audience who would be most receptive to the topic. the audience is stay-at-home moms who are 30 to 40 years old. they are college-educated women who live in the suburbs. the audience is a group of male college students getting ready to graduate from college. they attend a large university in a big city. the audience is blue-collar workers who are 30 to 50 years old. they work in the steel industry in a small, rural community. the audience is retired men and women who are 70 to 80 years old. they live in a retirement community, and many of them have several grandchildren who live far away. the audience is a group of students getting ready to sign up for seventh-grade classes. they come from a wide range of intellectual levels, but many of the students travel extensively with their families. using a social networking website to connect with friends and family arrowright advantages of joining a labor union arrowright home schooling reform arrowright how to prepare for a job interview arrowright the importance of studying a foreign language arrowright reset

Does anyone know how to do this and can urgant it was due like 2 weeks ago