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5 days ago · Key points in Earth’s formation include the initial birth of our planet within the solar nebula, the differentiation into layers, and the dynamic interplay of geological processes that have shaped the Earth we know today.
1 day ago · Rough plot of Earth's atmospheric transmittance (or opacity) to various wavelengths of electromagnetic radiation, including visible light. Different molecules absorb different wavelengths of radiation. For example, O 2 and O 3 absorb almost all radiation with wavelengths shorter than 300 nanometres. Water (H 2 O) absorbs at many wavelengths ...
3 days ago · Outgassing of water to Earth’s surface began before 4.3 billion years ago, a time based on analysis of ancient zircons that show the effects of alteration by liquid water. In Earth’s deepest interior, chemical reactions between the mantle and the core became possible.
4 days ago · Bio exam 2-calvin cycle. Explain the Calvin cycle, utilizing the term carbon fixation in your discussion. Click the card to flip 👆. The cycle begins by incorporating CO2 from the air into organic molecules already present in the chloroplast.
4 days ago · One of the many paths a carbon molecule can take through the carbon cycle is by the carbon molecule taken by plants through the process of photosynthesis, then the plants carbon molecule can turn into oxygen.
1 day ago · It was only after the dawn of the space age, however, when photographs from rockets and orbiting spacecraft first captured the dramatic curvature of Earth’s horizon, that the conception of Earth as a roughly spherical planet rather than as a flat entity was verified by direct human observation.
4 days ago · According to the detailed study, the sun’s rays broke down CO2 in Mars’ atmosphere billions of years ago. This process, known as photodissociation, caused the carbon dioxide molecules to split into carbon monoxide and oxygen. The resulting carbon monoxide then fused with other chemicals present in the atmosphere, such as hydrogen and nitrogen.
