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.
The Foundation Trust holds the endowment, including the annual installments of Warren Buffettâs gift, and funds the foundation. Bill and Melinda are the trustees for the Foundation Trust, and the endowment continues to be managed, as it has been for more than 10 years, by a team of outside investment managers.