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.
Buffett also helps charity in smaller ways. Each year Buffett auctions off a lunch with him that supports the Glide Foundation, the nonprofit of a San Francisco church that is so far to the left that it refuses to accept donations of used clothes, on the grounds that second-hand clothes demean the homeless.