The second stage of prenatal development begins at about two weeks after conception. at this point, the growing bundle of cells is called an embryo.
Foodborne illness is caused by pathogenic microorganisms present in spoiled food. Apart from thorough cooking, cooked food needs to be always separated from the raw food. This keeps microorganisms present in the uncooked raw food away from the food that is ready to be eaten. In addition, our hands and areas coming in contact with the food need to be clean and sanitized. Also, food should be kept in the right and safe temperature. Finally, clean water and safe raw materials should be used for preparing meals.
It is ecosystem !!!!!!!!!!!!!!!!!!!!
1. Burning of fossil fuels.
Under natural conditions the release of carbon from fossil fuels
occurs slowly, as they are sub ducted into the mantle, and CO2 is released
through volcanic activity. However, humans are heavily reliant on fossil fuels,
and extract it from the lithosphere in great quantities. Put in to fire a coal,
oil, natural gas, and other fossil fuels – for industrial movement and power
generation for example, neglect the carbon from the fossil fuels and emits it
as CO2 into the atmosphere.
2.
Land use and land cover change (e.g. deforestation)
Big
part of carbon are stored in living plants. Then, land use changes, most importantly
the clearance of forests (which are very densely inhabited by plants, and
therefore contain a large amount of carbon), can influence the carbon cycle in
two ways. Firstly, removing of vegetation will let the plants die which would
otherwise be capturing carbon from the atmosphere through photosynthesis. And
as dense forests are change by crops/pasture land/built environments, there is
usually a net decrease in the carbon store, as smaller plants (and worse still,
concrete) store far less carbon than large trees. Deforestation also make much
more soil to be eroded, and carbon stored in the soil is rapidly taken into
rivers.
<span>Because the nature is in cycle of the carbon cycle, humans are
affected and cause the lead to a number of amplifications and feedbacks. Thereby
releasing more CO2 to the atmosphere. Increases in global temperature also
affect ocean temperatures, modifying oceanic ecosystems and having the
potential to disrupt the oceanic carbon cycle, limiting the ocean’s capability to
absorb and store carbon.</span>
