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2 years ago

Abnormally slow depolarization of the ventricles would most likely change the shape of the ________ in an ecg tracing.

1 answer:

8 0

Abnormally the slow depolarization of the ventricles would most likely change the shape of the QRS in an ECG tracing. It is a combination of three graphical deflections which is seen on a typical electrocardiogram. It is the most visually obvious and central part of the tracing. It corresponds to depolarization of left and right ventricles of the human heart.
During the activity, it may be shorter in children.
QRS waves occur in succession rapidly. Q wave is a downward deflection following P wave. R wave follows upward deflection and S wave is downward deflection which is after R wave while T wave follows S waves.

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Which traits would Aristotle have used to classify sharks? Choose more than one answer.

Oliga [24]

Answer:

The main trait that was different between sharks 14 and 9 was that shark 14 (Mobulidae) has a front with two points that look like horns, whereas shark 9 (Dasyatidae) has a front with no points that look like horns.

Explanation:

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2 years ago

Which freshwater source is a permanent shallow body of water with plant life throughout? lake pond reservoir wetland

Svetllana [295]

Answer:

Pond

Explanation:

Ponds are inland water bodies that are usually smaller in surface area than a lake and nonflowing in contrast to rivers or streams. However, a pond is a shallow freshwater source that inhabits organisms' life (plants and animals alike).

Due to the shallow state of a pond, light penetrates to the bottom, hence, allowing the constant growth of plant life. Therefore, PONDS are freshwater sources that contains a permanent shallow body of water with plant life throughout.

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2 years ago

Read 2 more answers

At what pH levels are enzymes in the human body productive?

fredd [130]

Answer:

Between ph7 and ph 11

Explanation:

The optimum pH level for this is at pH7 because the number achieved was 350 product molecules per Minute

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2 years ago

Heavy rains and mudslides cause a river to change course, isolating two groups of lizards from one another. If they remain isola

Stells [14]

If they remain isolated for a long period of time, the two groups will probably diverge genetically, and may result in speciation.

Genetic divergence is the process whereby two groups of the same ancestral species acquire autonomous genetic changes through time, usually after the groups have been separated reproductively for some period of time.

Speciation is an evolutionary process whereby populations develop to become different species.

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2 years ago

Primary succession occurs when a community develops ____________ while secondary succession occurs when one ________.

alexandr402 [8]

A. into a climax community; species replaces another

B. and replaces another; ecosystem becomes stable

C. on unoccupied ground; biological community replaces another

D. and then fails; niche changes

E. intraspecific competition; experiences interspecific competition

Answer:

C. on unoccupied ground; biological community replaces another

Explanation:

Primary succession is a gradual change that occurs on bare rocks or areas that have no life existing on it before. It could take several years to be colonized by living things.

On the other hand, secondary succession are changes that occur when one biological community replaces another as a result of factors such as wild fires, or take place in abandoned farm land. New species of organisms take over the area that has life existing on it already. Secondary succession occurs on areas or land that has been colonized initially before.

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2 years ago