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Who came up with the cell theory?

The first part of the cell theory states that all living things on Earth are comprised of cells; this portion of the cell theory was determined by botanist Matthias Schleidan. The second part, determined by zoologist Theodor Schwann, states that cells make up the basic units of every living thing. Physician Rudolph Virchow was responsible for the third part, which states that living cells stem from other living cells.

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What is 5ml converted to ounces?

There are several different types of ounces, including the metric ounce, international avoirdupois ounce and the international troy ounce, used to measure weight and distance. There have been more throughout history, but these three are the ones in use as of 2015. The avoirdupois ounce is roughly equivalent to 28 grams and is used in the United States as a measure of weight. The troy ounce is used specifically as a measure of weight for gems and precious metals and is roughly equal to 31 grams.

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What makes soil fertile?

Organic matter provides plenty of nutrients for plants, including potassium, phosphorus and nitrogen. With the help of micro organisms, organic matter is broken down into its basic elements before being consumed and used by plants.\nHealthy pH also makes soil fertile. Soil pH is the measurement of soil’s acidity. It affects the availability of minerals to plants. Most plants prefer a pH that is close to neutral, while other plants thrive in a more acidic soil. For vegetables, herbs and flowers, a pH ranging from 5.5 to 6.2 is optimal.\nFertile soil has good texture. Compared to compact soil,..

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How many bytes are in a terabyte?

A flash drive can hold 1 terabyte of data, although storage sizes vary. A byte contains the smallest amount of bits that can be utilized by most computers and computer systems. Bits, expressed as either 1 or 0, are the smallest and most basic units of digital technology data. The 8 bits that make up 1 byte can be expressed in different combinations to create 256 codes.

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Do the planets travel around the sun in a path called an orbit?

Not all orbits lie on exactly the same plane with respect to one another, as some planets orbit at a slight angle to the plane of the ecliptic. Pluto has been relegated to the status of a dwarf planet, but its orbit is quite unusual, as it is the most tilted of all planets and crosses the orbit of Neptune. The orbits of Mercury, Venus, Earth and Mars lie relatively close to one another, while the orbits of Jupiter, Saturn, Uranus and Neptune are widely spaced from each other.

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How do you make an egg catapult?

Cut the egg carton in half, and reinforce each half using a ball of newspaper. Secure the lid closed with a rubber band, and then wrap a few rubber bands around the carton below the opening. Tape a rubber band to the end of a teaspoon handle, and place the spoon's handle under the rubber bands that have been wrapped around the carton. Bring the rubber band attached to the spoon handle up and over the spoon and wrap it around the carton. Wrap a few more rubber bands around the carton, this time above the opening, and attach a final rubber band to the spoon and top of the egg carton using t..

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What is the surface temperature on planets?

Mercury, the closest planet to the sun, has one of the highest surface temperatures in the solar system at 465 degrees Celsius. Because Mercury has no atmosphere to hold in heat, it has a wild variation in surface temperature. Its dark side experiences temperatures as low as -185 C.\nVenus has a thick atmosphere of sulfur dioxide and carbon dioxide that traps the sun's heat and creates a greenhouse effect. As a result, Venus has an average surface temperature of 460 C.\nAlthough Earth has an average surface temperature of 7.2 degrees, its surface temperature varies widely, ranging from -8..

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Where do volcanoes mostly occur?

Subduction zones occur when an oceanic plate and a continental plate collide, which causes the denser oceanic plate to slide underneath the lighter continental plate. When this happens, the crust in the oceanic plate is pulled deeper into the earth, where it eventually melts to form magma that eventually rises to the surface through the volcano. The "Pacific Ring of Fire" that stretches around the Pacific is home to the majority of the world's subduction zones, which is why it is also home to most of the land volcanoes on earth.\nThe third type of volcano occurs at a so-called hot spot, w..

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Where do dust storms occur?

Sand and dust storms are common in plains areas, such as the desert, because there is little vegetation to protect the soil from being picked up by harsh winds. NASA states that some of the largest dust storms on Earth are in Africa's Sahara desert and in the Asian Gobi desert. In the United States, dust storms are common in the Southwest and in some areas of the Midwest. Drought can increase the occurrence of dust storms.\nWhile most dust particles travel only a short distance before returning to the ground, dust can travel hundreds of miles in some cases. For instance, dust from Africa ..

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What is static stretching?

According to Therapeutic Associates, static stretches were once the preferred method of pre-activity warm-up for athletes, and they are still used to some extent. Research has found that the effects of static stretches may decrease strength in the targeted muscles for up to one hour, which could contribute to an increased risk of injury. Because of this, many people use dynamic stretching instead, which involves more body movement and helps short-term flexibility.

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