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In each theory what causes the extinction of plants and animals?
Wiki User
∙ 6y ago
Asteroid Impact : Plants and organisms that performed photosynthesis died, and many animals that depended on those plants for food died, too
Volcanic Eruptions : The volcanic dust blocked the sun's energy from reaching Earth's surface, causing plants, and animals to die.
Wiki User
∙ 6y ago
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What was the alvarez asteroid theory?
Briefly, the theory is that the mass extinction which included the loss of the dinosaurs at the end of the Cretaceous period was caused by the impact of a large asteroid.
What is the object of the prepositional phrase in the sentence One theory about dinosaur extinction is that a huge asteroid or comet hit the earth?
The prepositional phrase is "about dinosaur extinction" and the object is "extinction." The word "dinosaur" is called a "noun adjunct" rather than an adjective.
How do you Proposed the cell theory of life?
In 1838, Jakob Matthias Schleiden ,a German botanist, first proposed the idea that all plants consist of cells. A year later, Theodor Schwann, a German zoologist, independently asserted that al animals and plants are made up of cells. This joint finding forms the basis of the cell theory.
What was learned about cells in the 1830s?
In the 1830s, scientists learned that plants and animals are made up of cells. Matthias Schleiden observed that plants are composed of cells, and Theodor Schwann extended this idea to animals as well. This was the foundation of the cell theory, which states that all living organisms are composed of cells.
What might have caused the extinction or made it worse at the end of the Eocene epoch?
There are a number of issues that caused a considerable drop in temperature, meteor strikes in three locations, a global decrease in CO2 levels (this is the current/leading theory). There is some evidence that the meteor strikes probably increased the cooling effect and probably resulted in the mass extinction of equids and the subsequent migration of ruminant animals from Asia to fill the voids.
Define evolutionary theory?
Evolutionary theory is a scientific theory of the origin of species of plants and animals. It was developed by Darwin.
Is only plants are composed of cells part of cell theory?
No, plants and animals both are composed of cells
What three pieces of edivence for Wegeners theory can from the sea floor?
Plants,animals,and something else
Which theory best describes how an asteroid striking earth may have caused the extinction of dinosaurs?
It's called "impact winter" and states that dust from the collision so reduced the sunlight that most of the plants died. As these are the base of the food chain, most of the animals that depended on them died as well.
Why did Aristotle believe the theory of spontaneous generation?
He believed that animals are the same as plants, in that some plants are grown from a seed, whilst some are self-generated. Though now, that theory has been disproved because plants are not self-generated.
Where do plants and animals came from?
Good question- no good simple answer- since plants and animals were hee before we were. A theory (educated guess that seems to be backed up by facts) is that over a period of time, plants and animals developed from simpler single celled forms of life.
Use the ideas of virchow to explain why plastic plants and stuffed animals are not alive?
Based on Virchow's part of the cell theory he contributed, plastic plants and stuffed animals are not produced from other cells.
What is another theory that gives an explanation for the extinction of the dinosaur?
Prior to the Asteroid Impact Theory of dinosaur extinction, one of the most popular theories for dinosaur extinction was the Flowering Plant Toxin Theory of dinosaur extinction. Flowering plants did not appear until just over 65 million years ago and many of them contain toxic plant alkaloids. The theory went that browsing herbivorous dinosaurs poisoned themselves eating flowering plants and built up high enough levels of the toxic alkaloids in their tissue that when carnivorous dinosaurs ate the bodies they were poisoned too. Extinction by this process was predicted to be slow, taking 3 or 4 million years. Dinosaurs never evolved the ability to taste the bitter flavor of these alkaloids, like mammals did who thus survived by avoiding the bitter plants. The current Asteroid Impact Theory is much prompter to eliminate the large dinosaurs, in some versions of the theory they went entirely extinct in only a couple years because they could not survive the icy cold dark winters lasting 2/3s to 3/4s of the year, following the impact for about a decade.
Which is a leading theory for the formation for fossil fuels?
organic matter
Which is a leading theory of the formation of the fossil fuels?
organic matter
Which of the following did Darwin use to support his theory?
he use DNA and skeleton and animals and plants on the Galapagos were similar but not exactly the same as animals on mainland south America
Why did many planets die at the end of the mesozoic?
Scientists believe the Cretaceous-Paleogene extinction event, or the plants dying at the end of the Mesozoic Era, was caused by a massive asteroid/comet impact. The theory suggests that the impact had catastrophic effects on the environment, including an impact winter, which prevented the plants from carrying out photosynthesis.
