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AlladinOne [14]
3 years ago
15

Characteristics of humus in soil profile​

Biology
1 answer:
Ad libitum [116K]3 years ago
5 0

Answer:

Humus has a characteristic black or dark brown color and is an accumulation of organic carbon. Besides the three major soil horizons of (A) surface/topsoil, (B) subsoil, and (C) substratum, some soils have an organic horizon (O) on the very surface.

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The intrinsic rate of the atrioventricular av bundle is beats min quizlet
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The intrinsic rate of the atrioventricular av bundle is 40 to 60 beats per minute (bpm).

<h3>What is the Atrioventricular (AV) and the intrinsic rate?</h3>

Atrioventricular (AV)  can be regarded as the block that  usually altered the  interruption of impulse transmission between the  atria to the ventricles.

And this have the 40 to 60 beats per minute (bpm) as the intrinsic rate.

Read more on intrinsic rate here:

brainly.com/question/25545513

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2 years ago
A grandfather clock needs to have a period of one second. What length of pendulum should be hung for
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Answer:

Explanation:

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3 years ago
WILL GIVE A BRAINLEST
Debora [2.8K]
Abiotic is the answer
6 0
3 years ago
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Complete the following analogy.
kupik [55]
The answer is B:Erosion.
6 0
3 years ago
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How are ancient organism tracks exposed to modern scientists?
Grace [21]

<u>Answer:</u>

The evidence comes from fossils.

<u>Explanation:</u>

Paleontology is the study of the history of life on Earth as based on fossils. Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock.

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