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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.
Why is the theory about the mammals eating dinosaur eggs not as strong as the theory of the dinosaurs meteorite extinction theory?
The main reason is that many different organisms went extinct along with the dinosaurs, both on land and in the sea. In all, about 65% of all species on Earth went extinct. Furthermore, many groups of organism disappear from the fossil record very suddenly. This evidence suggests that a cataclysmic event devastated numerous ecosystems around the world.
Who proposed the theory that all animals and plants are made up of cell and they could arise by pre-existing cells?
The theory that all animals and plants are made up of cells and that cells arise from pre-existing cells is known as the Cell Theory. This concept was developed in the mid-19th century by scientists Matthias Schleiden and Theodor Schwann, who proposed that all living organisms are composed of cells. Additionally, Rudolf Virchow later contributed to this theory by stating that all cells come from pre-existing cells.
What is the contribution of Theodor Schwann to the development of the theory?
Theodor Schwann contributed to the cell theory by proposing that animals are made up of cells. He also collaborated with Matthias Schleiden to establish the idea that cells are the basic unit of structure in plants and animals. Schwann's research and findings helped shape our current understanding of cell biology.
Are mosquitoes responsible for the extinction of the dinosaurs?
Mosquitoes in modern time are know to pass parasites and deceases. This was also probably true in ancient times as well, maybe some kind of dinosaur malaria. However although this may have contributed to the deaths of individual dinosaurs (there is absolutely no evidence for this) it is not thought that this is a contributing factor in the extinction of all non-avian dinosaurs. Most telling is the extinction of the large marine reptiles such as mosasaurs. Since they were completely aquatic it is unlikely that mosquitoes could have caused their extinction. Another clue is the lack of extinction of small animals. Mosquito born diseases would not have just attacked the larger species and leave most of the smaller ones alone. The most popular current theory suggest that at the end of the Cretaceous saw a great increase in volcanism. This would have changed the environment causing climate change and also would have "poisoned" the environment. The non-avian dinosaurs were living in a dying world. To make matters worse a 6 mile wide asteroid hit the Yucatan Peninsula in what is now Mexico. This caused global fires as rock ejected into orbit by the asteroid started to fall back to earth. It also caused a "nuclear winter" which made many species of plants to die out. This was just too much for dinosaurs and other animals to cope with. Mostly the only animals that survived this extinction were all under 10kg. They perhaps were animals that lived underground or where able to shelter away from the fires.
Is only plants are composed of cells part of cell theory?
No, plants and animals both are composed of cells
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.
What three pieces of edivence for Wegeners theory can from the sea floor?
Plants,animals,and something else
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
Why did scientist modify their theory about the extinction of the dinosaurs?
because they realised they were wrong.
Which is a leading theory of the formation of the fossil fuels?
organic matter
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.
Use the ideas of virchow to explain why plastic 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 Darwins greatest scientific contribution?
Charles Darwin's greatest scientific contribution is his work on the Theory of Evolution. Without it, the fact that plants and animals evolved from its ancestors would not have been discovered.
