I think it’s D bc it’s talkin about fossil fuels
Explanation:
<u>the Paleozoic Era </u>
The Precambrian era describes a period of time that pre-dates Cambrian. This time typically references the entire period of the history of earth before the formation of rocks containing identifiable fossils occurred. It covers the majority of Earth’s history and is divided into the Hadean, Archean and the Proterozoic era.
Just before the Cambrian eruption, in the Paleozoic Era the environment was oxygenated, culminating in an explosion of new life in the Proteozoic Eon (2500-541 million years ago) in the form of primitive blue-green algae named cyanobacteria and oxygen based species. Multicellular species followed later, along with structure at higher levels, and complex life. Oxygen levels grew gradually over this period of time, from low levels.
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Answer:
regulates motor coordination, movement and balance
Explanation:
See https://my.clevelandclinic.org/health/articles/22566-hypothalamus
The formula for hydrate indicates the number of water molecules that are attached to each formula unit of the compound. Forexample, nickel (II) sulfate hexahydrate is a green/blue solid that has six water molecules included in the crystal foreach Ni2+and each SO42-ion.Many common minerals are
<h3>What is a hydrate ?</h3>
Any compound containing water in the form of H2O molecules, usually, but not always, with a definite content of water by weight.
- The best-known hydrates are crystalline solids that lose their fundamental structures upon removal of the bound water.
- Hydrates are formed when water and light end natural gases come into contact at certain temperature and pressure conditions
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