Toy designed for older audiences, such as teenagers or adults, demonstrate advanced concepts. Newton's cradle, a desk toy designed by Simon Prebble, demonstrates the conservation of momentum and energy. Not all toys are appropriate for all ages of children. Even some toys which are marketed for a specific age range can even harm the development of children in that range. "Age compression" is a toy industry term that describes the modern trend of children moving through play stages faster than they did in the past. Children have a desire to progress to more complex toys at a faster pace, girls in
Food, Conservation, and Energy Act of 2008 that already exist and also taking part in extra activities. The same changes apply to the energy title of the Act which also expanded the development of bio-based energy sources along with other renewable sources. Tax provisions on biofuels such as ethanol were introduced as well. The Act accelerated the commercialization of advanced biofuels, including cellulosic ethanol, encourage the production of biomass crops, and expand the current Renewable Energy and Energy Efficiency Program. On April 29, 2008, the Farm Bill contained three major components: Section 9003 of the Food, Conservation, and Energy Act of 2008 provided for grants covering up