Convert 778.3 million Km into scientific notation

What is known as the rate of business expansion through increasing output and sales as opposed to mergers, acquisitions, and takeovers? a- organic growth b- corporate growth c- inorganic growth d- monetary growth

Earth's atmosphere is unique among the planets and is able to support life because it contains a large amount of a) oxygen b) helium c) methane d) carbon dioxide

Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.