Most people tend to think that if the sun ever stopped emittinglight, all animal life on Earth would soon end. Populations ofhydrothermal-vent animals might continue to exist for thousands ofyears, however. Explain.
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Most people tend to think that if the sun ever stopped emitting
light, all animal life on Earth would soon end. Populations of
hydrothermal-vent animals might continue to exist for thousands of
years, however. Explain.
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- The oxygen revolution permanently changed Earth’s environment and dramatically impacted the evolutionary history that followed. Answer ALL the questions related to this phenomenon, below. Give the span of geological timewhen the oxygen revolution occurred. Provide oneline ofevidence for the oxygen revolution. What evolutionary novelty(complex metabolic pathway) enabled these new organisms to release so much O2? Organisms with what kind of metabolismprobably went extinctbecause of the oxygen revolution? What kind of metabolism, not possible before, likely evolved in responseto the oxygen revolution?Scientist have determined that the early Earth had no free oxygen anywhere. Briefly explain what evidence in the rock layers that scientists found to prove when the early conditions on earth had free oxygen in the atmosphere.During the Paleozoic, many life forms developed hard parts (shells/bones/etc.). Why would it be useful for organisms to have hard parts?
- Identify the true statement(s) about global temperatures across Earth's history. (Note: may or may not be more than one correct answer) a) Current global temperature is higher than at any point in the last 500-million years. b) Temperature increased faster in the 20th century than at any other time in Earth’s history. c) Modern groups of animals, such as birds, turtles, rodents have never experienced global temperatures as high as current in their evolutionary history d) Current global temperatures have previously been experienced by humans. e) Current global temperature is higher than its been since the last glacial maximum 20,000 years agoScientists are examining the possible role of a large asteroid in the Cretaceous mass extinction event. A large asteroid strike would likely have caused rapid climate cooling and diffusion of sunlight. Which of the following statements are the best null and alternative hypotheses when scientists look at the geologic evidence of extinction related to the asteroid strike? Null: The rate of extinction would be steady over the entire length of time the climate was altered. Alternative: The rate of extinction would be greatest immediately before the asteroid strike. Null: The rate of extinction would gradually decrease over the entire length of time the climate was altered. Alternative: The rate of extinction would be at its lowest immediately after the asteroid strike. Null: The rate of extinction would be steady over the entire length of time the climate was altered. Alternative: The rate of extinction would be greatest immediately after the asteroid strike. Null: The rate of…Volcanic ash can be used to date fossil finds because each time it is expelled by an eruption it has the same relative proportions of radioactive isotopes. True or False
- Around the time Eukaryotic Cells began to compartmentalize their reactions, and the chloroplast and mitochondria evolved, the atmosphere went through a shift in composition. A new deadly gas became more and more prominent, which likely caused a mass extinction for those organisms that couldn't adapt to its toxicity. The gas was: Nitrogen Sulfuric Acid Oxygen MethaneThe Andes Mountain Range is located along the western coastline of South America and includes a number of active and inactive volcanoes. (a) Describe how this mountain range formed and (b) explain why the Atacama Desert is located on the western edge of this mountain range. *Scientists are examining the possible role of a large asteroid in the cretaceous mass extinction event. A large asteroid strike would likely have caused rapid climate cooling and the diffusion of sunlight. which of the following statements are the best null and alternative hypotheses when scientists look at the geologic evidence of extinction related to the asteroid strike?
- The term Anthropocene implies that we were the major force of nature prior to 10,000 years ago. our global impact has accelerated greatly during the past couple of centuries. humans have impacted the earth at a planetary scale so severe that we can consider this a new geological epoch. millions of years from now the record of human life will be eradicated. there are more humans than bacteria.In Oct 2022, a chilling discovery was made in Vuvatu, a country known for its extensive volcanic landscapes. Scientists found the remains of a large organism that had no resemblance to any current form of life on Earth. The organism also had no resemblance to any fossils ever found, including the very few fossils ever recovered from Vuvatu (fossils are rarely ever found in Vuvatu since volcanic landscapes are generally not conducive of fossilization). The world buzzed with the possibility that this was a crash site for an extraterrestrial body. An extensive study of the uncovered remains was conducted by many research facilities. Their conclusions regarding the organism’s features are listed below: Physical features: The organism has a surprisingly soft and malleable exoskeleton that reflects ambient light, creating mesmerizing patterns. In fact, the remains highly suggest that most of its body parts are soft and blubbery rather than rigid. Habitat: Given its relationship with…In Oct 2022, a chilling discovery was made in Vuvatu, a country known for its extensive volcanic landscapes. Scientists found the remains of a large organism that had no resemblance to any current form of life on Earth. The organism also had no resemblance to any fossils ever found, including the very few fossils ever recovered from Vuvatu (fossils are rarely ever found in Vuvatu since volcanic landscapes are generally not conducive of fossilization). The world buzzed with the possibility that this was a crash site for an extraterrestrial body. An extensive study of the uncovered remains was conducted by many research facilities. Their conclusions regarding the organism's features are listed below: 1. Physical features: The organism has a surprisingly soft and malleable exoskeleton that reflects ambient light, creating mesmerizing patterns. In fact, the remains highly suggest that most of its body parts are soft and blubbery rather than rigid. 2. Habitat: Given its relationship with…
