How do living things reproduce? How do twins, triplets, and other multiple births happen? How does fertilization occur? Find out in this frank and accessible look at reproduction. Set up in a straightforward question and answer format, this informative title asks and answers questions about the basic scientific and social aspects of reproduction. Written in a conversational tone that draws readers in, 101 Questions about Reproduction is the perfect resource for biology and health classes, reference libraries, and more.

As in previous books in this critically acclaimed series, Brynie polled hundreds of high school students across the country to find out what they wanted to know most about sex and sexuality. Using an accessible question-and-answer format, Brynie helps readers discover and learn facts about the sex and sexuality. Brynie appealing and clear writing style makes learning about sex and sexuality for students easy and understandable.

As in previous books in this critically acclaimed series, Brynie polled hundreds of high school students across the country to find out what they wanted to know most about blood and circulation. Using an accessible question-and-answer format, Brynie helps readers discover and learn facts about the blood and circulation in human body. Brynie appealing and clear writing style makes learning about blood and circulation as easy as donating blood to the blood bank.

As in previous books in this critically acclaimed series, Brynie polled hundreds of high school students across the country to find out what they wanted to know most about their immune system. Using an accessible question-and-answer format, Brynie helps readers discover and learn facts about the inner workings of the human immune system. Brynie appealing and clear writing style makes learning about your immune system is easy as curing a cold.

A primatologist explores the mystery of the origins of human reproduction, explaining that understanding the evolutionary past can provide insight into what worked, what didn't, and what it all means for the future of mankind.

Becoming sexually involved with another person is a big step in your life. It’s something to think about on your own long before you have to make a decision with anyone, even the partner you love deeply. It is probably one of the most important decisions you’ll ever make. Sixty-seven percent of sexually experienced teens say they wish they had waited longer before having sexual intercourse. Through case studies and information from experts, Safe Sex 101 provides the overview teens need to understand abstinence, contraception, sexually transmitted diseases, and unplanned pregnancies, and how these can affect their lives.