Where Is Calcium Found?

Calcium (symbol Ca) is a chemical element that belongs to a group of alkaline earth metals. It doesn’t exist in a free state in nature so it must be obtained through certain chemical processes.

In nature it can be found in rocks, chalk, limestone, dolomite, calcite, gypsum, seashells…

Its importance for living beings is huge. Interesting is that average human body consists of about 1-1,5 kg (female-male) of calcium. Most of it is in the bones and teeth.

As for nutrition, it can be found in milk and all its products, seeds and nuts, spinach, Chinese cabbage, kale, broccoli, tofu, orange juice…

Where Does Biomass Come From?

Biomass refers to biological degradable materials which emerge in agriculture and animal husbandry and as components of industry and town waste.

It comes from organic material such as dead plant, wood, leaves, food scraps, agricultural crops and residue, animal feces etc.

Basically burning that material extracts energy locked inside which can be used for different purposes. It is used mostly as one of the renewable sources of energy and as such produces less pollution than other energy sources.

Solid or liquid fuel, building material, fabrics, paper and else can be produced from biomass.

Biomass becomes highly appreciated for its characteristics and wide range of uses.

What will vinegar do to the lawn?

Vinegar is a product that one can use to take care of the lawn. Not only is it inexpensive, it is also a great substitute to the harsh chemicals that are bought from the store. Vinegar has great uses inside your house and has even more in your lawn. It comes in handy for various purposes, be they for the plants or even the lawn furniture.

The weeds that have taken over your lawn and become a menace can be easily controlled with the help of vinegar. Carefully spray it on the weeds and watch them make a disappearing act. Not only does it kill them, it also prevents them from growing back thus keeping your lawn beautiful and harm-free. If mould has caused heartache in your lawn, not to worry, vinegar is there to mend it. You can clean and shine your lawn plastic chairs with the help of diluted vinegar. Clean the pond before you put in the fish or the bowl before the birds dip in for their bath, all with vinegar. Keep away four legged intruders and even prevent stains on the lawn from your dog’s urine; vinegar is one product that you will need in place of all the expensive cleaners and detergents.

Where is the constellation Leo located?

Anyone who is even vaguely familiar with the zodiac signs will be aware of one of the signs called Leo. This sign is a constellation like all other zodiac signs and is found between Cancer and Virgo. Its name means the lion in the Latin language. It is called by various other names in different languages. It has fifteen stars of which nine have planets. It has three stars that shine brightly. One of them is rather close to the Earth. In fact one of the brightest stars in the Earth’s sky at night is also present in this constellation. It has seven other constellations bordering it apart from the ones mentioned earlier. The name Leo was given because of the way the stars are connected. The lines joining the stars represent a lion with each star forming a different part of the lion’s body. Egyptian mythology suggests that the Sun entered this constellation during the summers and the lions on the Earth walked up to the cool waters to seek comfort. The Sun does indeed enter this constellation from the 10^th of Aug till the 15^th of Sept. There are remnants of the representations of the Leo even today on the Egyptian walls.

What chemicals make rain acidic and how does it happen?

With the growing industrialization and urbanization of the world, we are witnessing the repercussions of our energy wastage and release of harmful gases to the atmosphere. Pollution and acid rain are some of the ill-effects caused that affect our lives and destroy living matter all around us. The chemicals that make rain acidic are emitted from the industries spewing out these gases everyday but also the emissions from our automobiles and refrigerators, paints that are used and pesticides that use in our own homes.

Harmful gases such as carbon dioxide, carbon monoxide, nitrogen oxides, and various other compounds that are volatile are let out into the atmosphere every time we burn wooden material or volatile substances. Industries let out a large amount of polluting gases everyday. When these compounds have a reaction with the water found in the Earth’s atmosphere, it forms acids. There are other causes as well. When some compounds are split up or volcanoes spew out harmful compounds of sulphur, it results in acid rain.

Spreading awareness about the harmful effects of the chemicals largely used around us and reducing the amount of chemicals released into the atmosphere is a small step towards minimizing the occurrence of acid rain.