primary source definition

What is the difference between a primary and secondary source July 28

What is the difference between a primary and secondary source
Credit:twechyCC-BY 2.0Another key difference between primary and secondary sources is that while primary sources provide direct account, secondary sources describe, interpret, analyze, summa ...

What are some sources of income for retirement July 28

What are some sources of income for retirement
Credit:Tara MooreTaxiGetty ImagesHome equity can also be used as retirement income if individuals have utilized a reverse mortgage or sold a home with additional equity invested, according t ...

What is a healthy carbohydrate intake July 28

What is a healthy carbohydrate intake
Credit:Adam GaultOJO ImagesGetty ImagesSFGate further recommends that healthy carbohydrates, such as whole grains, vegetables, fruits, legumes, nuts, seeds, low fat milk and low fat yogurt, ...

How do whales swim July 28

Many cetaceans, which include whales, dolphins and porpoises, have dorsal fins that act as rudders, or stabilizers. They have strong muscles that run along their spines and the sides of their bodies to move their flukes up and down, rather than side

What do green frogs eat July 28

Green frogs are fist-sized frogs with an outer color that ranges from green to yellowish-brown. They usually catch food by sitting and waiting in the water or by the shore until their prey comes near. They eat throughout the day and at night as well.

How do scallops reproduce July 28

Most bivalve species reproduce by spawning, although the process varies considerably between species. For example, certain clams use a hybrid spawning technique that involves releasing sperm cells into the water column. Females suck the sperm-rich wa

What do plants eat July 28

Chlorophyll is responsible for turning the necessary ingredients into carbohydrates that the plant can then consume for energy. This process takes place within a structure known as a chloroplast. The necessary carbon dioxide is taken in through small

Which muscles are used during a baseball swing July 28

Which muscles are used during a baseball swing
Credit:Terry J AlcornE+Getty ImagesBecause the key to a good baseball swing is the speed of the bat head through the hitting zone, conditioning coach Bob Alejo recommends resistance-based tr ...

What are biotic and abiotic factors July 28

Abiotic factors are obtained from the atmosphere, hydrosphere and lithosphere. Water is a crucial abiotic factor, and all living organisms use water. Just like water, oxygen is also an important abiotic factor for living organisms. Human beings and a

Why do living things require energy July 28

Living organisms represent a rich store of free energy. The primary source of energy comes from the sun. However, despite the fact that the sun is an excellent source of energy, not every life form can directly utilize the sun's energy. Plants utiliz

What are some nonliving things in a jungle July 28

Nonliving things, such a water and sunlight, are the primary sources of energy in the jungle biome. Aside from enabling plants to photosynthesize, the amount, intensity and length of sunlight in the jungle determine most of the organisms' rate of gro

What is 2D computer animation July 28

What is 2D computer animation
Credit:Magdalena JankowskaE+Getty Images2D computer animations typically evolve from primary sources, including prints and drawings. These images are derived from various other disciplines, ...

What is the purpose of a crankshaft sensor July 28

What is the purpose of a crankshaft sensor
Credit:dave_7CC-BY 2.0The crankshaft sensor performs these two important tasks by sensing the precise location of the cylinder pistons as they move up and down. It then relays this informati ...
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