The first trimester is when the embryo attaches to the placenta by the umbilical cord and the placenta make contact with the uterus.
Answer:
C. using social media to share information about causes important to you
Tom can reach his goal safely because he is prepared and committed to learning how to ride his skates. Toms being safe by signing up for a class, buying the right safety equipment, and trying to reach his goal by starting 2 months ahead of the summer.
Answer:
White blood cells kill pathogens when your skin becomes infected