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2 years ago

Why are desert solis low in organic matter?

Biology

2 answers:

Evgen [1.6K]2 years ago

3 0

Answer:

Less plants grow in deserts.

Explanation:

Areas that have more plants have more nutrients. Plants receive and give of nutrients when they die. So areas with little water and plants have little nutrients. Also the sun damages organic matters.

Alex17521 [72]2 years ago

3 0

Answer:

Desert soils are poor in organic matter because there are very less plant remains in the soil. 

Explanation:

A desert has extreme conditions which support less life. Organic matter in soil called humus is formed by the deposition of dead plants and animals in the soil. Soil contains decomposing microbes which act upon the dead plant and animal remains converting them to organic matter. 

In deserts the availability of water is very low which limits the growth of plants there. Animal population is also very less in desert areas. Above all that the extreme heat of the desert destroys the less amount of organic matter formed. 

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Dafna1 [17]

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2 years ago

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How would you set up a simple experiment to test whether salt-crystal growth is affected by temperature?

olganol [36]

You could put salt-crystals outside during different times of the day when the temperature drops or rises.

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2 years ago

Lyme disease is characterized by a(n) ________ that forms at the site of infection.

zlopas [31]

Answer:

Lyme disease is characterized by a red rash called erythema migrans at the site of infection.

Explanation:

Lyme disease is caused by the bacterium Borrelia. It is a highly communicable disease, which spreads through the bite of infected tick in humans. At the site of the tick bite, a characteristic red expanding rash can be seen on the skin. This red rash is known as erythema migrans. Other symptoms of this disease include fever, fatigue and headache.

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3 years ago

Clotting begins when a __(1)__ occurs in a blood vessel wall. Almost immediately, __(2)__ cling to the blood vessel wall and rel

Wittaler [7]

Question is incomplete, the complete question is as follows :

Clotting begins when a _________ occurs in a blood vessel wall. Almost immediately, _______ cling to the blood vessel wall and release _____________ which helps to decrease blood loss by constricting the vessel. __________ is also released by damaged cells in the area. This chemical substance causes ________to be converted to ____________. Once present, thrombin acts as an enzyme to atatch ___________molecules together to form long, threadlike strands of _________, which then traps ____________ flowing by in the blood.

Answer:

Clotting begins when a BREAK occurs in a blood vessel wall. Almost immediately, PLATELETS cling to the blood vessel wall and release SEROTONIN, which helps to decrease blood loss by constricting the vessel. THROMBOPLASTIN is also released by damaged cells in the area. This chemical substance causes PROTHROMBIN to be converted to THROMBIN. Once present, thrombin acts as an enzyme to attach FIBRINOGEN molecules together to form long, threadlike strands of FIBRIN, which then traps ERYTHROCYTES flowing by in the blood.

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3 years ago

10. Which of the following statements about the leading strand is true?

Yakvenalex [24]

The statement 'the leading strand is synthesized continuously and uses 1 RNA primer' is TRUE. It is replicated in the 3' – 5' direction.

The leading strand refers to the DNA template strand that is synthesized in the 3' – 5' direction during DNA replication.

The 3' – 5' direction that occurs during DNA replication is the direction of the replication fork.

RNA primers are short RNA sequences used for the initiation of the synthesis of DNA (DNA replication) both in the leading DNA strand and the lagging DNA strand.

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brainly.com/question/12912868

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1 year ago