Biology, 27.01.2021 22:00, betsylancer8071
Scientists hypothesize Earth’s early atmosphere was a result of outgassing from the interior of the planet. Gravity trapped the gasses (including NH3 and CO2) close to Earth’s surface. Over time, bacteria with the ability to perform photosynthesis changed the composition of the atmosphere. As plants evolved, levels of oxygen continued to increase as the levels of carbon dioxide decreased. The hydrosphere – primarily the ocean – played a major role absorbing carbon dioxide from the atmosphere. As plants grew on Earth’s surface, they weathered the geosphere producing soil. Microorganisms in the soil allowed for the evolution of land plants which also extended the boundaries for early animal populations.
As outgassing and volcanic eruptions created Earth’s early atmosphere, what two spheres directly affected one another?
Question 1 options:
Biosphere and geosphere
Hydrosphere and biosphere
Geosphere and atmosphere
Atmosphere and hydrosphere
Answers: 2
Biology, 22.06.2019 00:10, maddie3354
Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?
Answers: 3
Biology, 22.06.2019 10:00, nyasiasaunders1234
Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins
Answers: 2
Biology, 23.06.2019 01:00, emilylittle2442
What happens during telophase? in advance : ) a. spindle fibers attach to the chrommatids. b. the mitomic spindle forms. c. the chromtaids are pulled apart. d. a new nucleus forms around each copy of dna.
Answers: 2
Scientists hypothesize Earth’s early atmosphere was a result of outgassing from the interior of the...
History, 09.11.2019 06:31
History, 09.11.2019 06:31
Health, 09.11.2019 06:31
Mathematics, 09.11.2019 06:31
Computers and Technology, 09.11.2019 06:31
Mathematics, 09.11.2019 06:31