Problem: 
Q: Answer the following question given this paragraph:   Puberty is the stage of life when a child becomes sexually mature. Puberty lasts from about 10 to 16 years of age in girls and from about 12 to 18 years of age in boys. In both girls and boys, puberty begins when the pituitary gland signals the gonads (ovaries or testes) to start secreting sex hormones (estrogen in girls, testosterone in boys). Sex hormones, in turn, cause many other changes to take place.   Q: What is the name of the stage of life when a child becomes sexually mature?   A:
Answer: puberty
Problem: 
Q: Answer the following question given this paragraph:   Fertilization The fusion of a sperm and an egg is a process called fertilization. This can occur either inside ( internal fertilization) or outside ( external fertilization) the body of the female. Humans provide an example of the former, whereas frog reproduction is an example of the latter.   Q: What is the process of the fusion of a sperm and an egg called?   A:
Answer: fertilization
Problem: 
Q: Answer the following question given this paragraph:   Living in water does present challenges to plants, however. For one thing, pollination by wind or animals isn’t feasible under water, so aquatic plants may have adaptations that help them keep their flowers above water. For instance, water lilies have bowl-shaped flowers and broad, flat leaves that float. This allows the lilies to collect the maximum amount of sunlight, which does not penetrate very deeply below the water's surface. Plants that live in moving water, such as streams and rivers, may have different adaptations. For example, cattails have narrow, strap-like leaves that reduce their resistance to the moving water (see Figure below ).   Q: What kind of water are cattails adapted for with narrow, strap-like leaves?   A:
Answer: