Soil results from the breakout of rocks and the mixing of resulting particles with organic matter and water. So, the correct option is (B).
Soil is produced from rocks which are the parent material through the processes of weathering and natural erosion. Water, wind, temperature changes, gravity, chemical interactions, living organisms and pressure differences all help break down the parent material.
The four basic processes which occur in soils are
1. Additions
2. Losses
3. Transformations
4. Translocation
The organic part of soil is formed when plants and animals die and then their bodies decompose, or break down, and mix with rock particles. Organic matter which is called humus helps to create pores in the soil. It keeps the soil soft and loose.
Thus, soil results from the breakout of rocks and the mixing of resulting particles with organic matter and water. So, the correct option is (B).
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Answer:
soil
Explanation:
B. The lithosphere is denser than the asthenosphere.
C. The asthenosphere is denser than the lithosphere.
D. The lithosphere has the same density as the core.
Answer:
A
Explanation:
Isostatic equilibrium is used to state why some regions of the lithosphere have greater elevation than others. The crust ‘floats’on the‘liquid’ mantle below and different regions of the crust submerge into the mantle differentially depending on their local densities or weight. Heavier regions such as in mountainous region (like the Himalayas) are sunken deeper into the mantle that other regions. Every local region has its own local isostatic equilibrium.
Answer:
The correct option is Option C
i.e. Asthenosphere is denser than lithosphere.
Explanation:
Asthenosphere is the layer situated below the lithosphere.
Theory of isostasy says that the layers above the other layer must have lesser density. This has two explanations. Firstly, if its not hold, then the denser above layer would sink below the less denser bottom layer. Secondly, as we go inwards, the pressure increases. This leads to the lower layers have greater density. So, as Asthenosphere is situated below the lithosphere, it has higher density.
The genetic info is found in the nucleus.
B) X or Y chromosomes, inherited from your mother.
C) two of the 22 pairs of chromosomes your inherited.
D) chromosomes from your mother and X from your father.
Answer:
The correct answer would be option A.
In humans, the gender of a child is mainly determined by the sex chromosome inherited from the father.
It is because human females are homozygous (XX) in terms of sex chromosome. So, their gamete will always contain an X chromosome.
In contrast, human males are heterozygous, that is, they contain XY as sex chromosome. Thus, they will produce two types of gametes of which one would contain X and the other one would contain Y.
When the male gamete containing X chromosome fuse with female gamete, the offspring produce would be a girl and when the male gamete containing Y chromosome fuse with female gamete, the offspring produce would be a boy.
Whitecap and swell are the two types of waves which are generated by moving over of water.
Waves are normally generated by the wind moving over water surface. They indicate the speed of the wind in the area. Swell is the wave which usually with smooth tops and that have moved beyond the area where they were first generated.
Height of waves varies over time. The wave height is calculated statistically as the average height of the highest one-third of the waves that is experienced over time. Swell waves are the regular, longer period waves which are generated by distant weather systems. They may travel over thousands of kilometers distance. A whitecap is a wave formed when the narrow crests of a wave are blown off by the winds. This creates a mixture of air and water.
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Answer:
The flow of energy in the ecosystem is generally unidirectional and there is loss of energy across each trophic levels successively.
Explanation:
The entry of energy occurs in the form of sunlight which is process by the plant through photosynthesis resulting in formation of nutrient essential for survival of plants. This plant energy then moves to the living organism feeding on it such as primary consumer. Here most of energy is used up and some energy is lost as heat. Likewise in the case of secondary consumers and tertiary consumers energy is used up with loss of some energy as heat at each level. The energy flow is unidirectional in the sense that it cannot be used back by the plant from the consumer levels. Thus the energy flows successively with loss at each level as heat.