The cell formed by the union of the ovum and sperm is called a(n) a. gamete b. embryo c. fetus d. zygote

Which barrier to economic development is shown in the following examples? i. the high rate of hiv infection in underdeveloped nations ii. the use of children as soldiers in uganda’s army in the early 2000s iii. low literacy rates in underdeveloped nations with limited exposure to adequate education a. foreign debt b. political instability c. widespread disease d. low levels of social welfare

How does social isolation affect teens?

Answer the questions in the image for brainliest. are my answers right? ?