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.
In fact, his main priority is giving his money away, rather than spending it. Facebook Zuckerberg is a member of the Giving Pledge, joining Bill Gates, Warren Buffett, and over 100 other billionaires vowing to donate the majority their wealth to philanthropy.