The hypothesis of continental drift is used to explain an event that happened
a. two million years ago.
b. two hundred million years ago.
c. two billion years ago.
d. two hundred billion years ago.
The answer is (b) Two hundred million years ago
Answer: b. two hundred million years ago.
Continental drift is a scientific theory was developed by Alfred Wegener (1880-1930). He was a German meteorologist, who proposed the hypothesis that continents were the part of huge landmass or supercontinent about 200 million years ago. These continents got separated or splitted from their parent continent and drifted to other locations. He named the parent or supercontinent as "Pangaea" (which means "all lands" in Greek) which began to break up.
Lobsters, fish, and starfish possess a central nervous system, while jellyfish do not.
The animals that possess a central nervous system from the given options are lobsters, fish, and starfish.
Jellyfish lack a true brain and have a system of connected nerve cells called a 'nerve net,' which is not considered a central nervous system.
Lobsters, fish, and starfish have a centralized nervoussystem, with lobsters and fish having a more complex organization of neurons including a brain, ganglia, and nerve cords.
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PGA
RuBP
NADPH
PGA (phosphoglycerate) is a metabolic intermediate of the light-independent reactions in photosynthesis. Therefore, the correct statement is option B.
A metabolic intermediate in photosynthesis's light-independent reactions, also known as the Calvin cycle, is PGA (phosphoglycerate). The Rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase) enzyme is responsible for fixing carbon dioxide into PGA during the Calvin cycle.
After that, PGA is transformed into other compounds like glyceraldehyde-3-phosphate (G3P) and glucose, which can be stored in plant tissues or used as energy.
The Calvin cycle gets its energy and reducing power from the light-dependent reactions in photosynthesis, which produce ATP and NADPH. RuBP (ribulose-1,5-bisphosphate) is the underlying carbon dioxide acceptor atom in the Calvin cycle.
Therefore, PGA (phosphoglycerate) is a metabolic intermediate of the light-independent reactions in photosynthesis.
Learn more about the PGA (phosphoglycerate) here:
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The metabolic intermediate of the light-independent reactions in photosynthesis is PGA (3-phosphoglycerate).
In photosynthesis, the light-independent reactions, also known as the Calvin cycle, occur in the stroma of chloroplasts. One of the metabolic intermediates produced during this process is PGA (3-phosphoglycerate). It is formed as a result of the incorporation of carbon dioxide into a five-carbon molecule called RuBP (ribulose 1,5-bisphosphate). PGA is then converted into other compounds, such as glucose, during subsequent steps of the Calvin cycle.
PGA is produced during the carbon fixation step of the Calvin cycle and is eventually used to generate sugars and other organic molecules in the process of photosynthesis.
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b. The narrator's war experiences are in the distant past and no longer influence the present.
c. The narrator's platoon was surrounded by the enemy, similar to the way the narrator feels when he is surrounded by his family.
d. The narrator continues to write war stories, but he is unable to talk about his wartime experiences.
e. The narrator feels his daughter and the young enemy continually cause him to face his past.
The correct answer is option C, The narrator's platoon was surrounded by the enemy, similar to the way the narrator feels when he is surrounded by his family
Reason -
In the story by Tim O’Brien’s, It is clear that the narrator is puzzled at two instances and at these two instances the word "Ambush" relate to its title The two instances are given below:
a) The first instance is when the narrator’s daughter is asking him question about his war time memories. The narrator feels guilty when he lied to his daughter in order to be a hero in front of her but somewhere he was aware that he was lying.
b) The second instance is when the narrator threw a bomb and killed a soldier of another nation. He is guilty about killing anyone during wartime.
Answer:
A. The narrator's present life cannot escape the bombardment of his wartime memories and actions.
Answer:
The correct answer would be A. crust.
The crust is the outermost layer of the earth which is composed of different types of rocks such as sedimentary, metamorphic, and igneous rocks.
It is completely solid and can be broadly classified into two types: continental crust and oceanic crust.
The thickness of the oceanic crust is about 5 km to 10 km. It is primarily composed of basalt, gabbro, and diabase.
The thickness of the continental crust is around 30 km to 50 km.
The crust forms lithosphere along with hard and upper mantle.
B. Help increase erosion rates
C. Are set up around natural resource areas
D. All of the above
the answer is c. Are set up around natural resource
________ absorb carbon from the atmosphere in the form of carbon dioxide. They use it for respiration and_________
Animals consume plants, transferring carbon along the food chain. Plants and animals respire and release carbon into air. When the animals and plants
die, they are eaten by
Carbon enters back into the atmosphere in the form of
______.
Answer:
Carbon is found in all living organisms. The constant flow of carbon on Earth through organisms and the air is known as the carbon cycle.
Plants absorb carbon from the atmosphere in the form of carbon dioxide. They use it for respiration and photosynthesis.
Animals consume plants, transferring carbon along the food chain. Plants and animals respire and release carbon into the air. When the animals and plants die, they are eaten by decomposers.
Carbon enters back into the atmosphere in the form of carbon dioxide through the process of decomposition and combustion.