__occurs when sperm fertilizes an egg cell

menstruation
conception
ovulation
labor

an egg cell and a sperm cell joined together if called a __

zygote
placenta
blastocyst
fetus

a week after fertilization, a blastocyst attaches to the lining of the__
ovaries
uterus
fallopian tubes
ovum

25 !

Megan is a three-year-old girl. every day, her nanny tells her a story. when her parents get home from work, megan tries to tell them the story. however, she can only retell a few parts of each story. she speaks in short sentences and often plays imaginary games. which type of developmental change is megan experiencing? a. social b. emotional c. physical d. cognitive

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer

Developing a positive identity to increase your level of self esteem true or false