In providing a long-term, coordinated program for habitat restoration and conservation, the Habitat Plan aims to enhance the viability of threatened and endangered species throughout the Santa Clara Valley. The Habitat Agency implements the Habitat Plan and reports compliance to the Wildlife Agencies.
(b). Scientists believe the Earth began its life about 4.6 billion years ago. The Earth formed as cosmic dust lumped together to form larger and larger particles until 150 million years had passed. At about 4.4 billion years, the young Earth had a mass similar to the mass it has today.
Earth is 4.6+ billion years old. It's seen a lot of birthday cake in those years, but it's really only seen eukaryotes for about the last 2 billion. When life first got started on Earth during the Precambrian Era, there were just a bunch of simplified prokaryotes at the birthday soirÃ©e, all without organelles.