On average, how many words make up the vocabulary of a five-year-old? 5,000-8,000 6,000-7,000 7,000-9,000 8,000-10,000

The world’s richest 20 percent of the population consume about what percentage of all goods and services in a given year?

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3

True or false a fertilized cell divides many times to form an embryo