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Science

The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.

203,801 Questions

How was the caravel invented?

The caravel was developed in Portugal during the 15th century as an evolution of earlier ship designs. It combined features of both Mediterranean and Northern European vessels, with a combination of square and lateen sails, a shallow draft, and a sturdy hull that allowed for long-distance exploration. The caravel's innovative design made it well-suited for ocean voyages, contributing to the Age of Exploration.

Who invented the first dichotomous key?

The first dichotomous key is generally credited to Theophrastus, a Greek philosopher and scientist from ancient Greece. He created a system to identify plants based on specific characteristics in his work "Enquiry into Plants."

What portion of all species have scientists identified and named?

Of course, we have no idea exactly what proportion of all species have been classified, named, described or discovered.

Currently there are at least 1 million named insect species, over 50 000 vertebrate species (of which 25 000 are fish, 5000 are mammals, 10 000 are birds, about 10 000 are reptiles and 6000 are amphibians) and 250 000 flowering plant species. What I have mentioned is only a tiny proportion of the number of species already named. The total number of named species probably approaches 2 million.

In South America, insecticide fog was released into a tree's canopy, out of which fell thousands of specimens of insect. 80% of those specimens were of species not yet described.

The number of tree species in the forests is better known than the number of insects (or arthropods in general). One argument took the number of tree species and multiplied it by the average number of insect species found to be specialist (to specific trees) per tree species. This yielded an estimate of undescribed arthropod species at 30 million. Since these seem to be the majority of life on Earth, it may be that the total of all life would in fact round off to this number of species; 30 million.

Still there are estimates of the total number of species up to 100 million. I was conservative in my last thumbsuck-like guess of the total number of species on Earth and guessed 50 million or so. Yet everyone around me was aiming much higher, much closer to 100 million.

2 million species described so far divided by 100 million in total and you can see the proportion of life so far discovered is astonishinly little. You may think we do know at least mostspecies. But then you imagine the undiscovered angler fish and crabs and polychaete worms in the endless depths of the unexplored oceans and the endless leafy heights of the rainforest trees crawling with insects................

How did the invention of the microscope affect scientific theories?

hi year seven of the futer or someone older well the answer is so that they can zoom in deep and in past years i read that they used to use ink to see because it was only black and white in old times.but thanks for reading .Aslo it has helped us know illnesses and how Science looks in the eyes of a attem or miniscule peice of scientific source or you would say equiptment.

hope it helped.

What time of the day that the temperature is in a highest point?

Typically, the highest temperature of the day occurs in the afternoon, between 2 pm and 4 pm. This is because the sun has had time to heat the Earth's surface throughout the day, reaching its peak around this time before starting to cool in the evening.

What is the Importance of your sense of sight in your life?

Our sense of sight is crucial for navigating our environment, interpreting facial expressions, and enjoying the beauty of the world. It allows us to perform daily tasks, such as driving and reading, and enhances our overall quality of life. Visual input also plays a key role in learning, communication, and forming emotional connections with others.

What scientist changed how you view the universe?

One scientist who changed how we view the universe is Albert Einstein. His theories of relativity revolutionized our understanding of space, time, and gravity, and laid the groundwork for modern astrophysics. Einstein's work also led to the development of technologies like GPS that rely on principles of his theories.

What is the science of human relations called?

Human relations falls under the category of either sociology (if you are interested in social organizations that are involved in human relations) or psychology (if you are interested in the individual thought processes that go into relations).

Is Pluto lost?

Pluto is not lost, its orbit is well understood and there are people who know exactly where it is on any given day.

However Pluto has an orbit that is unusually eccentric, and is inclined by 17 degrees to the ecliptic. That means it is found well off the beaten track where the eight major planets can always be found, near the ecliptic.

Why do you like galileo galilei as a scientist?

He had many great achievements in life,he is committed and dedicated to his work,and though he was under house arrest this does not affect him to continue his cotributions in the field of science.

Why do they call a nebula a nebula?

"Nebula" comes from the Latin word for "cloud." Nebulae are large clouds of dust, hydrogen, helium, and other gases in space. The term was originally used to describe any celestial object with a hazy appearance.

What animal has the biggest eye--ten times bigger than a human eye?

The colossal squid has the largest eye of any animal, measuring up to 11 inches in diameter. This is about ten times larger than a human eye. These huge eyes help the squid to see in the deep, dark waters where it lives.

How does AstraZeneca operate?

AstraZeneca is a multinational pharmaceutical company that operates in the research, development, and commercialization of prescription drugs across various therapeutic areas. They collaborate with academic institutions, biotechnology companies, and other pharmaceutical firms to bring innovative treatments to market. Additionally, AstraZeneca has a global reach, with a presence in multiple countries and a focus on addressing unmet medical needs.

Which science has the goal of understanding the world around us?

That's an easy one! The answer is: Geology! "Geo" in meaning "Earth," "Ology" in meaning "the study of." Geology is the study of Earth, ergo: The science in which has the goal of understanding the world around us.

How do geese adapt to low oxygen levels?

Geese have adaptations such as larger lungs and more efficient circulation systems that enable them to extract oxygen more effectively from the air. They can also regulate their metabolism to cope with lower oxygen levels by slowing down their activity levels. Additionally, geese may adjust their flight patterns and altitude to find areas with higher oxygen concentrations.

Why anallactic lense are provided in a tacheometer?

An anallactic lens is provided in a tacheometer to ensure that the vertical line of sight remains unchanged even when the telescope is tilted to different zenith angles. This helps maintain accuracy in measuring vertical distances and angles during surveying activities.

How light is the lightest All Black ever?

The lightest All Black ever was George Nepia, who played in the 1920s and weighed around 71 kg (156 lbs).

Is Bubble wrap sun resistant?

Bubble wrap is not designed to be sun resistant and prolonged exposure to sunlight can cause it to break down and lose its effectiveness as a packaging material. It is best to store bubble wrap in a cool, dark place to maintain its quality.

Are changes in solar energy that create day and night the result of earth's rotation?

Say for example, you are currently at point A on the surface of the earth. As the earth rotates, point A will eventually be on the side of the earth facing away from the sun, resulting in darkness. It always spins in the same direction, hence the sun always rises in the East and sets in the West. The reason we have moonlight is because light is reflected off of the moon.

In short, if I've understood your question correctly, yes, the changes in light are due to the rotation of the earth.

Which state has been hit with the most tornadoes in the past 50 years?

Texas by far has had the highest number of tornadoes in the past 50 years.

What is a cheap nontoxic non-rusting metal?

Assuming you mean by metal a workable metal as opposed to an element classified as metal, it is a hard question to answer because almost all metals can be toxic, in sufficient quantities. Gold and platinum are the two that are inert enough to be non-toxic. As to the others, the least expensive metal that resists oxidation and is relatively non-toxic would be nickel. Tho a percentage of the population shows a contact allergy to nickel.

Where can you study astrobiology?

Starfleet Academy?

The only places I'm aware of with a formal program in it are the NASA Astrobiology Institute at the NASA Ames Research Center (Mountain View, CA, US) and the University of Glamorgan in the UK.

However, it's a multidisciplinary research field. Most researchers active in it are technically in Biology, Chemistry, or Physics (or, if at their particular institution it's a separate department from Physics, Astronomy) departments. Geology, Molecular Biology, and Biochemistry are also possibilities.

The proper way to pursue advanced studies is to pick a researcher who's doing something you're interested in, and go wherever they are. The USUAL way to pursue advanced studies (hey, it's what I did) is to pick a school and then try to find a researcher there doing something interesting. The usual method tends to fall apart if you're interested in a particular, highly specialized field (e.g. astrobiology), because there may or may not be someone doing research in that field at the particular institution you've chosen (exceptions being the ones listed above). You could get really lucky and there are several, you could get less lucky and find only one, you might get even less lucky and find someone who's not currently doing it but is willing to start a new project along those lines, or (and unfortunately the most likely case) is that no one there is doing it or interested in doing it, or the one guy who is has no funding, or is just generally an unpleasant person to work for (yeah, they say work WITH, but trust me, FOR is usually more accurate).

How is an isotope different from its original atom?

When an atom is of the same atomic number, atomic mass, etc. to the one on the periodic table (Lets use Boron for example) Then B is the regular atom. But if you change the number of neutrons (from 6-to-7 or whatever number) ; because the number of protons never changes; you will get a different atomic mass, so an isotope is the atom with a different atomic mass. You write an isotope atom with the elements symbol and to the left of it you script (In the top left corner really small like an exponent) the new atomic mass. So in this case B would now be 12B

How does the amount of light affect primary production?

The amount of light affects primary production by influencing the rate at which photosynthesis occurs in plants and algae. More light typically leads to higher rates of photosynthesis and therefore increased primary production in ecosystems. However, excessive light can also be detrimental by causing damage to photosynthetic machinery.