Answer:
Each time your heart beats, an electrical signal travels through the heart. An EKG can show if your heart is beating at a normal rate and strength. It also helps show the size and position of your heart's chambers. An abnormal EKG can be a sign of heart disease or damage.
Electromagnetic fields and therefore waves are generated orthogonal to the electric current that generated it.
Answer:
(c) directional selection
Explanation:
Directional selection is a type of natural selection that occurs when members of a population of a species with a particular extreme phenotype is selected or favored against the other phenotypes when natural forces act on the population of a species. Individuals having the particular traits that are favored survive and become more common that others with traits that are less favored.
Directional selection may likely result in the species of butterflies in which darkly collared butterflies are not preyed upon, ensuring their survival, while the other butterflies with other colors will be phased out with time. Darkly colored butterfly will be selected for while the others will be selected against.
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For a quantity of water, milliliters (mL) are used
For the length of a leaf centimeters or millimeters (cm; mm) are used
For the mass of a small stone, gram (g) are used.
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The most important factor to consider when selecting sources for an essay is the level of detail provided by the source.
<h3>What factors are considered when selecting a source for an essay?</h3>
When writings essays, it is important that the contents are factual and well-researched.
It is also important that the source materials required for the last to be easily accessible as this will help in the completion of the essay.
However, the most important factor to consider when selecting sources is the level of detail provided by the source.
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