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Do starfish have a brain?
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The nervous system of the starfish is very simple...there is no brain and there are not even any ganglia to coordinate movement. The nervous system is characterized by a nerve ring that surrounds the mouth. A radial nerve branches off of the nerve ring and extends to each arm.
@askmenow
Do starfish have a brain?
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The nervous system of the starfish is very simple...there is no brain and there are not even any ganglia to coordinate movement. The nervous system is characterized by a nerve ring that surrounds the mouth. A radial nerve branches off of the nerve ring and extends to each arm.
@askmenow
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Why does the moon appear to change shape?
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The Moon appears to change shape because we see different amounts of the lit part as the Moon orbits Earth. When the Moon is between Earth and the Sun, the lit side is hidden from us. As it moves around Earth, more and more of the lit side comes into view.
@askmenow
Why does the moon appear to change shape?
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The Moon appears to change shape because we see different amounts of the lit part as the Moon orbits Earth. When the Moon is between Earth and the Sun, the lit side is hidden from us. As it moves around Earth, more and more of the lit side comes into view.
@askmenow
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What percentage of the human brain is water?
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"Your brain is made up of about 75 percent water" and then "The human brain is the fattest organ in the body and may consists of at least 60 percent fat". Or: "The old adage of humans only using 10% of their brain is not true.
@askmenow
What percentage of the human brain is water?
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"Your brain is made up of about 75 percent water" and then "The human brain is the fattest organ in the body and may consists of at least 60 percent fat". Or: "The old adage of humans only using 10% of their brain is not true.
@askmenow
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What causes the color of the red sea?
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Located between the East African coast and the Saudi Arabian peninsula, the Red Sea got its name because of a type of algae called Trichodesmium erythraeum, which is found in the sea. When these blooms of algae die off they appear to turn the blue-green color of the ocean to a reddish-brown.
@askmenow
What causes the color of the red sea?
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Located between the East African coast and the Saudi Arabian peninsula, the Red Sea got its name because of a type of algae called Trichodesmium erythraeum, which is found in the sea. When these blooms of algae die off they appear to turn the blue-green color of the ocean to a reddish-brown.
@askmenow
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What makes red blood cells and white blood cells?
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White blood cells (WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All leukocytes are produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell.
@askmenow
What makes red blood cells and white blood cells?
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White blood cells (WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All leukocytes are produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell.
@askmenow
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Which country is known as the land of the midnight sun?
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Canada (Yukon, Northwest Territories, and Nunavut), Greenland, Iceland, Finland, Norway, Russia, Sweden, and the United States (Alaska). A quarter of Finland's territory lies north of the Arctic Circle and at the country's northernmost point the sun does not set at all for 60 days during summer.
@askmenow
Which country is known as the land of the midnight sun?
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Canada (Yukon, Northwest Territories, and Nunavut), Greenland, Iceland, Finland, Norway, Russia, Sweden, and the United States (Alaska). A quarter of Finland's territory lies north of the Arctic Circle and at the country's northernmost point the sun does not set at all for 60 days during summer.
@askmenow
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What does a lunar eclipse look like from Earth?
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Lunar eclipses occur when Earth's shadow blocks the sun's light, which otherwise reflects off the moon. There are three types — total, partial and penumbral — with the most dramatic being a total lunar eclipse, in which Earth's shadow completely covers the moon.
@askmenow
What does a lunar eclipse look like from Earth?
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Lunar eclipses occur when Earth's shadow blocks the sun's light, which otherwise reflects off the moon. There are three types — total, partial and penumbral — with the most dramatic being a total lunar eclipse, in which Earth's shadow completely covers the moon.
@askmenow
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Is a coffee bean a fruit?
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A coffee bean is a seed of the coffee plant, and is the source for coffee. It is the pit inside the red or purple fruit often referred to as a cherry. Even though they are seeds, they are referred to as 'beans' because of their resemblance to true beans.
@askmenow
Is a coffee bean a fruit?
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A coffee bean is a seed of the coffee plant, and is the source for coffee. It is the pit inside the red or purple fruit often referred to as a cherry. Even though they are seeds, they are referred to as 'beans' because of their resemblance to true beans.
@askmenow
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Is everyone who has blue eyes related?
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If you have blue eyes, you may be related to every other blue-eyed person in the world. Researchers in Denmark have found that every person with blue eyes descends from just one "founder," an ancestor whose genes mutated 6,000 to 10,000 years ago. Before then, everyone had brown eyes.
@askmenow
Is everyone who has blue eyes related?
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If you have blue eyes, you may be related to every other blue-eyed person in the world. Researchers in Denmark have found that every person with blue eyes descends from just one "founder," an ancestor whose genes mutated 6,000 to 10,000 years ago. Before then, everyone had brown eyes.
@askmenow
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How high can you go without oxygen?
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We pass out when the pressure drops below 57 percent of atmospheric pressure — equivalent to that at an altitude of 15,000 feet (4,572 meters). Climbers can push higher because they gradually acclimate their bodies to the drop in oxygen, but no one survives long without an oxygen tank above 26,000 feet (7925 m).
@askmenow
How high can you go without oxygen?
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We pass out when the pressure drops below 57 percent of atmospheric pressure — equivalent to that at an altitude of 15,000 feet (4,572 meters). Climbers can push higher because they gradually acclimate their bodies to the drop in oxygen, but no one survives long without an oxygen tank above 26,000 feet (7925 m).
@askmenow
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How long is a cat's memory span?
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A cat's memory is thought to be at least 200 times better than a dog's. But as any cat owner knows, felines are more selective, and remember what they think is useful to them. Short term memory for a dog is about five minutes; cats remember much longer, up to 16 hours. Long term memory is harder to determine.
@askmenow
How long is a cat's memory span?
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A cat's memory is thought to be at least 200 times better than a dog's. But as any cat owner knows, felines are more selective, and remember what they think is useful to them. Short term memory for a dog is about five minutes; cats remember much longer, up to 16 hours. Long term memory is harder to determine.
@askmenow
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What part of the plant is a carrot?
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When we eat corn or peas we are eating seeds, and when we eat radish or carrot, we are eating roots. Cauliflower and broccoli plants produce flowers we like to eat. Potatoes grow under- ground, but the part we eat is not a root.
@askmenow
What part of the plant is a carrot?
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When we eat corn or peas we are eating seeds, and when we eat radish or carrot, we are eating roots. Cauliflower and broccoli plants produce flowers we like to eat. Potatoes grow under- ground, but the part we eat is not a root.
@askmenow
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Which country first adopted time zones?
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On November 2, 1868, the then-British colony of New Zealand officially adopted a standard time to be observed throughout the colony, and was perhaps the first country to do so. It was based on the longitude 172°30′ East of Greenwich, that is 11 hours 30 minutes ahead of GMT.
@askmenow
Which country first adopted time zones?
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On November 2, 1868, the then-British colony of New Zealand officially adopted a standard time to be observed throughout the colony, and was perhaps the first country to do so. It was based on the longitude 172°30′ East of Greenwich, that is 11 hours 30 minutes ahead of GMT.
@askmenow
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How much of air is nitrogen?
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The common name given to the atmospheric gases used in breathing and photosynthesis is air. By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1%.
@askmenow
How much of air is nitrogen?
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The common name given to the atmospheric gases used in breathing and photosynthesis is air. By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1%.
@askmenow
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Why does Aspirin help during a heart attack?
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Platelets are cells that clump together and help to form blood clots. Aspirin keeps platelets from clumping together, thus helping to prevent or reduce blood clots. During a heart attack. Blood clots form in an already-narrowed artery and block the flow of oxygen-rich blood to the heart muscle.
@askmenow
Why does Aspirin help during a heart attack?
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Platelets are cells that clump together and help to form blood clots. Aspirin keeps platelets from clumping together, thus helping to prevent or reduce blood clots. During a heart attack. Blood clots form in an already-narrowed artery and block the flow of oxygen-rich blood to the heart muscle.
@askmenow
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Can pure water conduct electricity?
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A solution conducts current when positive and negative ions are randomly dissolved in it. Pure water doesn't have enough ions but when you add HCl you add a strong electrolyte so, after the addition, solution can conduct electricity very well.
@askmenow
Can pure water conduct electricity?
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A solution conducts current when positive and negative ions are randomly dissolved in it. Pure water doesn't have enough ions but when you add HCl you add a strong electrolyte so, after the addition, solution can conduct electricity very well.
@askmenow
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Are clouds made up of liquid or gas?
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Clouds, snow, and rain are all made of up of some form of water. A cloud is comprised of tiny water droplets and/or ice crystals, a snowflake is an aggregate of many ice crystals, and rain is just liquid water. Water existing as a gas is called water vapor.
@askmenow
Are clouds made up of liquid or gas?
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Clouds, snow, and rain are all made of up of some form of water. A cloud is comprised of tiny water droplets and/or ice crystals, a snowflake is an aggregate of many ice crystals, and rain is just liquid water. Water existing as a gas is called water vapor.
@askmenow
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Is a camel spider a spider?
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It belongs to the class Arachnida, but while all spiders are arachnids, not all arachnids are spiders. Another common name is wind scorpion, but it's not a scorpion, either. The camel spider is of the Solifugae order, which is Latin for “those who flee from the sun.”
@askmenow
Is a camel spider a spider?
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It belongs to the class Arachnida, but while all spiders are arachnids, not all arachnids are spiders. Another common name is wind scorpion, but it's not a scorpion, either. The camel spider is of the Solifugae order, which is Latin for “those who flee from the sun.”
@askmenow
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When were Pogs popular?
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Pogs were a short lived fad in the mid-90s. It involved throwing a small heavy disc, called a Slammer, on top of a stack of cardboard circles, called POGs. The game was popular with grade schoolers and other stupid people. POGs were caps to a bottled drink of the same name.
@askmenow
When were Pogs popular?
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Pogs were a short lived fad in the mid-90s. It involved throwing a small heavy disc, called a Slammer, on top of a stack of cardboard circles, called POGs. The game was popular with grade schoolers and other stupid people. POGs were caps to a bottled drink of the same name.
@askmenow
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What are the elements that make up living things?
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The six most common elements in living things are carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur. Atoms of these elements combine and form thousands of large molecules. These large molecules make up the structures of cells and carry out many processes essential to life.
@askmenow
What are the elements that make up living things?
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The six most common elements in living things are carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur. Atoms of these elements combine and form thousands of large molecules. These large molecules make up the structures of cells and carry out many processes essential to life.
@askmenow