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What is the function of liquid connective tissue?

Blood's primary role is to carry respiratory gases and nutrients to the body's cells. As it moves from the arteries to the capillaries, it diffuses through the interstitial spaces that lie between blood vessels and cell walls. To carry waste away, some of this fluid diffuses back in the opposite direction. In addition to transporting gas, it moves leukocytes to areas of infection, allowing phagocytic cells to destroy organisms. Finally, blood also carries B-cells and T-cells, which play an important role in mediating immunity.Lymphatic fluid acts as a drainage system that allows some..

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What is shocked quartz?

The difference between shocked quartz and normal quartz can only be noticed underneath a petrographic microscope. A petrographic microscope is designed to study quartz with the aid of polarized light. Sets of microscopic parallel lines criss-cross each other on the face of the quartz. These lines, when viewed from edge on, are referred to as shock lamellae.

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What is some evidence for the plate tectonics theory?

The theory of plate tectonics posits that the continents and ocean basins on Earth's crust rest on large plates that are pulled continuously along over semi-molten material just beneath them. In places where these plates meet, the dense, heavy sea-floor slides under, or "subducts," the lighter continental plates. At other places, new sea floor is created from frequent volcanic eruptions. These phenomena are observed with earthquakes clustering around the known plate boundaries and fresh crust being pushed up at the mid-ocean ridges.\nAnother observation that supports the theory is that, i..

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What is an example of carrying capacity?

Carrying capacity is the maximum size of a population within a particular species that the resources in an area are able to sustain indefinitely without significant degradation or depletion of the resources. Carrying capacity is not static for an area as it may be extended as a result of technological or social advances or reduced as a result of resource degradation, as in the case of people surviving on a remote island after a shipwreck.The carrying capacity is the number of individuals that survive on the island, which depends on the quantity of resources, such as food and water, available i..

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What is the definition of organic activity?

Tree roots are strong enough to wedge apart rocks. When this happens on a cliff side or steep slope, the process can cause boulders to slide downward. Lichens cling to rocks and produce small amounts of acid. This acid eventually breaks down minerals and weaken stones, especially when thousands of lichens cover large areas. Burrowing animals loosen soil that washes away after heavy rain.\nAll of this organic activity is important because it helps weather rocks into soil over time. This soil produces viable ecosystems for more plants and animals. As new rocks rise to surface after tectonic move..

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What are some fun things to do in the snow?

Catch and save snowflakes using black paper and microscope slides. To catch the snowflakes, place black paper in the freezer until cold, and use the cold paper to catch snowflakes as they fall from the sky. Use a magnifying glass to view the delicate, unique structure of each snowflake. To save snowflakes, spray cold microscope slides or Plexiglas with clear lacquer on the paper's surface before catching the snowflakes. Afterwards, place the slide in a plastic container with a lid, and leave it in the snow for three to four hours to harden. The snowflakes can be viewed under a magnifying ..

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What are some early signs of puberty in boys?

Beginning around age 11, the first observation of puberty in boys is testicle growth followed after about six months by penis enlargement. Appearance of armpit and pubic hair is the next sign, according to MedicineNet.\nAs the voice box, larynx and vocal cords grow, a boy's voice cracks and squeaks. This leads to a deeper voice. Muscle growth follows. Often facial hair is the final puberty stage, says MedicineNet.\nA growth spurt happens about two years after puberty. Hormone changes during puberty increase acne indicates MedlinePlus. Hormones also intensify sweat and sweat smell.

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Is chalk an element, compound or mixture?

Chalk is formed at the bottom of the seafloor from limestone mud during certain conditions. Layers of lime build on top of each other until the sedimentary rock chalk is formed. Most of the chalk on earth was formed 60 to 100 million years ago during the Cretaceous period. Chalk gets its white color from Coccolithophores, tiny skeletons of plankton that fall down to the seafloor and form lime mud. Most of the Earth's chalk is found off the southern and eastern coasts of England, between Devon and Yorkshire. Chalk is effective in preserving fossils and is a common vessel for records of Cre..

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What is the scientific name for fungi?

For example, the phylum chytridiomycota contains some of the earliest evolved fungi. Another phylum, zygomycota, consists of land dwelling fungi that only have septa in reproductive areas. The phylum ascomycota includes yeasts and molds.Each species of fungus has a scientific name. Amanita flavoconia, a species of mushroom, is a part of the order agaricales and the phylum basidiomycota, in addition to the kingdom fungi.

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What does the enzyme RNA polymerase do?

RNA polymerase initiates DNA transcription at the right time, ensures that the right sequences are transcribed and produces the RNA strand that perfectly complements the DNA strand that was copied. RNA polymerase is also capable of making RNA strands longer by adding additional nucleotides, a process that is known as elongation. All of these processes are fundamental to the production of DNA in every living creature.

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