Who first proposed the theory of evolution by natural selection?
In the early 19th century, Jean-Baptiste Lamarck proposed his theory of the transmutation of species, the first fully formed theory of evolution. In 1858, Charles Darwin and Alfred Russel Wallace published a new evolutionary theory that was explained in detail in Darwin's On the Origin of Species (1859).
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In the early 19th century, Jean-Baptiste Lamarck proposed his theory of the transmutation of species, the first fully formed theory of evolution. In 1858, Charles Darwin and Alfred Russel Wallace published a new evolutionary theory that was explained in detail in Darwin's On the Origin of Species (1859).
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What is the enzyme that breaks down lactose?
The enzyme responsible for breaking down lactose is lactase, an enzyme found on the wall of the intestines. Lactase breaks down lactose (the sugar found in milk) into galactose and glucose.
@askmenow
The enzyme responsible for breaking down lactose is lactase, an enzyme found on the wall of the intestines. Lactase breaks down lactose (the sugar found in milk) into galactose and glucose.
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Which is the only planet that rotates clockwise?
If you were to look down at the plane of the solar system from its 'north pole' you would see the planets orbiting the Sun counter clockwise, and rotating on their axis counterclockwise. Except for Venus. Venus would be rotating clockwise as it orbited the Sun counterclockwise.
@askmenow
If you were to look down at the plane of the solar system from its 'north pole' you would see the planets orbiting the Sun counter clockwise, and rotating on their axis counterclockwise. Except for Venus. Venus would be rotating clockwise as it orbited the Sun counterclockwise.
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Is a gall bladder an organ?
The gallbladder is a small storage organ located inferior and posterior to the liver. Though small in size, the gallbladder plays an important role in our digestion of food. The gallbladder holds bile produced in the liver until it is needed for digesting fatty foods in the duodenum of the small intestine.
@askmenow
The gallbladder is a small storage organ located inferior and posterior to the liver. Though small in size, the gallbladder plays an important role in our digestion of food. The gallbladder holds bile produced in the liver until it is needed for digesting fatty foods in the duodenum of the small intestine.
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Are neutrons a positive charge?
Proton—positive; electron—negative; neutron—no charge. The charge on the proton and electron are exactly the same size but opposite. The same number of protons and electrons exactly cancel one another in a neutral atom.
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Proton—positive; electron—negative; neutron—no charge. The charge on the proton and electron are exactly the same size but opposite. The same number of protons and electrons exactly cancel one another in a neutral atom.
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What gland is responsible for regulating metabolism?
The thyroid gland regulates the body's metabolism, while parathyroid glands regulate calcium levels and have no effect on metabolism.
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The thyroid gland regulates the body's metabolism, while parathyroid glands regulate calcium levels and have no effect on metabolism.
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What element is a diamond made of?
Diamonds are made up of the element carbon. Also, graphite is also made up of carbon. The only difference between the two is the way that the atoms are bonded together.
@askmenow
Diamonds are made up of the element carbon. Also, graphite is also made up of carbon. The only difference between the two is the way that the atoms are bonded together.
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Which mineral is the hardest on the Mohs scale?
As it says in Mohs scale, the diamond is always at the most top of the scale, being the hardest mineral. There are ten minerals in Mohs scale, talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and for last and the hardest, diamond.
@askmenow
As it says in Mohs scale, the diamond is always at the most top of the scale, being the hardest mineral. There are ten minerals in Mohs scale, talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and for last and the hardest, diamond.
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👍1
What planet is yellow and orange?
Earth is by far the most dynamic planet when seen from space. Mars: red-orange; this color comes from rusty rocks on the surface since the clouds are rare and thin. Jupiter: has orange and white bands; the white bands are colored by ammonia clouds, while the orange comes from ammonium hydrosulfide clouds.
@askmenow
Earth is by far the most dynamic planet when seen from space. Mars: red-orange; this color comes from rusty rocks on the surface since the clouds are rare and thin. Jupiter: has orange and white bands; the white bands are colored by ammonia clouds, while the orange comes from ammonium hydrosulfide clouds.
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What percentage of the earth's water is frozen?
Of the three percent of the water that is not in the ocean, about 69 percent is locked up in glaciers and icecaps. Ninety percent of that frozen water is in Antarctica and about nine percent covers Greenland. Of the remaining freshwater, 30 percent of it is groundwater, captured below our feet.
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Of the three percent of the water that is not in the ocean, about 69 percent is locked up in glaciers and icecaps. Ninety percent of that frozen water is in Antarctica and about nine percent covers Greenland. Of the remaining freshwater, 30 percent of it is groundwater, captured below our feet.
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👍1
How much of the earth's atmosphere is made up of nitrogen and oxygen?
It is primarily composed of nitrogen (78%) and oxygen (21%) with only small concentrations of other trace gases. Nearly all atmospheric water vapor or moisture is found in the troposphere, so it is the layer where most of Earth's weather takes place.
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It is primarily composed of nitrogen (78%) and oxygen (21%) with only small concentrations of other trace gases. Nearly all atmospheric water vapor or moisture is found in the troposphere, so it is the layer where most of Earth's weather takes place.
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Why is the ring of fire called the ring of fire?
The area encircling the Pacific Ocean is called the "Ring of Fire," because its edges mark a circle of high volcanic and seismic activity (earthquakes). Most of the active volcanoes on Earth are located on this circumference.
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The area encircling the Pacific Ocean is called the "Ring of Fire," because its edges mark a circle of high volcanic and seismic activity (earthquakes). Most of the active volcanoes on Earth are located on this circumference.
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When did Greenwich mean time start?
Greenwich Mean Time (GMT) was adopted as the world's time standard at the Washington Meridian Conference in 1884. This conference also established Universal Time, from which the international 24-hour time-zone system grew. This is why all time zones refer back to GMT on the prime meridian.
@askmenow
Greenwich Mean Time (GMT) was adopted as the world's time standard at the Washington Meridian Conference in 1884. This conference also established Universal Time, from which the international 24-hour time-zone system grew. This is why all time zones refer back to GMT on the prime meridian.
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What is your age?
( let's check the age groups of our community)
( let's check the age groups of our community)
Anonymous Poll
2%
Less than 15 years
25%
15 to 20 years
41%
21 to 25 years
16%
26 to 30 years
7%
31 to 35 years
4%
35 to 40 years
4%
More than 40 years
Can tonsils grow back after being removed?
During a tonsillectomy, most of the tonsils are removed. However, some tissue often remains, so tonsils can occasionally regenerate — although they probably won't grow back completely or to their original size.
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During a tonsillectomy, most of the tonsils are removed. However, some tissue often remains, so tonsils can occasionally regenerate — although they probably won't grow back completely or to their original size.
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How long do taste buds last for?
Taste buds go through a life cycle where they grow from basal cells into taste cells and then die and are sloughed away. Their normal life cycle is anywhere from 10 days to two weeks. However, burning your tongue on hot foods can also kill taste buds.
@askmenow
Taste buds go through a life cycle where they grow from basal cells into taste cells and then die and are sloughed away. Their normal life cycle is anywhere from 10 days to two weeks. However, burning your tongue on hot foods can also kill taste buds.
@askmenow
👍1
How fast does the earth spin?
The circumference of the Earth at the equator is 25,000 miles. The Earth rotates in about 24 hours. Therefore, if you were to hang above the surface of the Earth at the equator without moving, you would see 25,000 miles pass by in 24 hours, at a speed of 25000/24 or just over 1000 miles per hour.
@askmenow
The circumference of the Earth at the equator is 25,000 miles. The Earth rotates in about 24 hours. Therefore, if you were to hang above the surface of the Earth at the equator without moving, you would see 25,000 miles pass by in 24 hours, at a speed of 25000/24 or just over 1000 miles per hour.
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Who invented the Celsius scale?
Anders Celsius was a Swedish astronomer who built the Uppsala Observatory and invented the Celsius (or centigrade) thermometer scale. Anders Celsius was born on November 27, 1701 in Uppsala, Sweden. He was a Swedish astronomer who taught at the University of Uppsala.
@askmenow
Anders Celsius was a Swedish astronomer who built the Uppsala Observatory and invented the Celsius (or centigrade) thermometer scale. Anders Celsius was born on November 27, 1701 in Uppsala, Sweden. He was a Swedish astronomer who taught at the University of Uppsala.
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How many languages are there in the world?
There are approximately 6,900 distinct languages in existence today, though there may be languages spoken in remote areas that we have yet to discover. No matter how many new languages we find, though, this number will be much lower in 100 years.
@askmenow
There are approximately 6,900 distinct languages in existence today, though there may be languages spoken in remote areas that we have yet to discover. No matter how many new languages we find, though, this number will be much lower in 100 years.
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Can female fireflies fly?
Male fireflies can fly, but female fireflies often can't because their wings are too short. The female firefly perches itself on a bush or a rock and waits. When a male passes by with a signal the female recognizes, the female flashes back the same signal.
@askmenow
Male fireflies can fly, but female fireflies often can't because their wings are too short. The female firefly perches itself on a bush or a rock and waits. When a male passes by with a signal the female recognizes, the female flashes back the same signal.
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