Stem cells differ from other kinds of cells in the body. All stem cells—regardless of their source—have three general properties: they are capable of dividing and renewing themselves for long periods; they are unspecialized; and they can give rise to specialized cell types.
Answer: All cells are unique and made for a particular reason. Various parts of an organism contain variety of cells. Because of this, cells are differentiated and develop their own group This allows them to do their job and to be more productive than operating alone as well. The division happens in the initial stage of a cell. Each cell undergoes modifications and develops unique properties. This process is called cell differentiation. They all work on their allocated roles after the separation. Several examples include muscle cells, fat cells, nerve cells, and so on.
Answer:
water and air is the other 50%
Explanation:
The particles that make up soil are categorized into three groups by size: sand, silt, and clay. Sand particles are the largest and clay particles the smallest. Although a soil could be all sand, all clay, or all silt, that's rare. Instead most soils are a combination of the three.
The relative percentages of sand, silt, and clay are what give soil its texture. A loamy texture soil, for example, has nearly equal parts of sand, silt, and clay.
SOIL HAS STRUCTURE
Soil structure is the arrangement of soil particles into small clumps, called "peds". Much like the ingredients in cake batter bind together to form a cake, soil particles (sand, silt, clay, and organic matter) bind together to form peds. Peds have various shapes depending on their “ingredients” and the conditions under which the peds formed: getting wet and drying out, freezing and thawing--even people walking on or farming the soil affects the shapes of peds.
Ped shapes roughly resemble balls, blocks, columns, and plates. Between the peds are spaces, or pores, in which air, water, and organisms move. The sizes of the pores and their shapes vary from soil structure to soil structure.
Answer:
new moon phase
Explanation:
Answer:
Nitrogen like other elements is cycling between air and soil in different forms.
Explanation:
When Nitrogen is in the air, there are some specialized bacteria (Nitrogen fixing bacteria) which are capable of transform gas Nitrogen in "solid" Nitrogen that can be asimilated by plants, these bacteria are asociated with plants and live in symbiosis in their roots. Nitrifying bacteria can also transform the Nitrogen in the air and fix it into the soil and denitrifying bacteria can transform soil Nitrogen ,in atmospheric Nitrogen which is present in the air to keep the Nitrogen cycle.
Burning of fossilfuels and deforestation are the two actions that most likely lead to an increase of carbon dioxide levels in the atmosphere.
The decomposition of buried carbon-based organisms that died millions of years ago produces fossil fuels.
They produce carbon-rich deposits, which are extracted and burned to generate energy. They are nonrenewable and currently provide approximately 80% of the world's energy.
The photo with the smoke from the cars will increase the carbon dioxide in the atmosphere by directly adding carbon dioxide to the atmosphere (as well as other compounds such as sulfur and carbon monoxide).
Thus, the "switch off" photo reduces electricityconsumption, which, if done collectively, may reduce the burning of fossil fuels, lowering carbon dioxide levels in the atmosphere.
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