Answer:
A. Early signs of life on earth
Explanation:
The Hadean, before the Archean, is the first geologic eon of Earth. It began with the formation of the Earth about 4600 million years ago and ended 4,000 million years ago. The planet had just formed and was still very hot due to high volcanism, a partially molten surface. Some geologists labels the period before the earliest-known rocks on Earth. At the end of it much cooler surface temperature and the formation of solid rock enabled to flaurish the life.
Probably very distantly, but sharks are fish, and dolphins are mammals.
Answer: Eukaryotes are the cells of animals, plants, and fungi and include membrane-bound organelles such as a nucleus and mitochondria.
Explanation: Hoped this helped! :D
Answer:
Biomes are determined by climate zones.
Explanation:
Because the makeup of a biome is dependent on its climate, biomes are often regarded as a synonymous with climate zones.
