Please capitalize where necessary: the cenozoic era began 65 million years ago and continues to this day. at this time any plants and animals that surround us today.
A: The Cenozoic era began 65 million years ago and continues to this day. At this time any plants and animals that surround us today.

Please capitalize where necessary: copyright: wikimedia.com folliculitis - it is an inflammation of one or more follicles.
A: copyright: wikimedia.com Folliculitis - It is an inflammation of one or more follicles.

Please capitalize where necessary: firmware upgrade for serial numbers ab - v2.2 "
A: Firmware upgrade for serial numbers AB - v2.2 "

Please capitalize where necessary: this is because the government has withdrawn some of the subsidy.
A:
This is because the government has withdrawn some of the subsidy.