1. Physical Weathering. In physical weathering the rocks are broken down into smaller pieces, but the chemical composition of the rock remains the same. Temperature Change. Hot temperatures can give rise to thermal expansion in rocks and cool temperatures can cause rocks to contract.
Buffett Donates $2.8 Billion, Breaks Personal Giving Record. Warren Buffett has bested his own personal philanthropy record once again, donating $2.8 billion to the Bill and Melinda Gates Foundation and several other charities as part of his annual giving pledge. The gifts given Monday top last yearâs $2.6 billion donation.
Every year, business magnate Warren Buffett hosts a lunch that raises money for a San Francisco church whose mission is to feed the hungry. Itâs usually one of the most expensive items on eBay but in 2010, it sold for even more than usual, when an anonymous bidder paid $2.6 million.