Calcium PowerPoint Presentation, PPT - DocSlides

Calcium & Magnesium

Demi

Sabados & Alec Ayala Marshall

Calcium Steps

Step 1: Weathering away of rocks that contain calcium carbonates/ silicates

Step 2: Calcium flows into the ocean, and stays there for one million years

Step 3: Eventually returns to the land due to precipitation

Human Dependencies

Humans often use calcium as a natural tool to increase soil fertility.

Calcium is also vital for humans when it comes to strengthening their bones. i.e. (Milk)

Calcium is a mineral necessary for life

Human Affects

Industrial emissions and land use have changed chemical weathering rates and leached calcium ions out of soils, aggravating plant and microbial community structures.

The increased acidity of the ocean waters associated with raising atmospheric concentrations of CO2 has decreased the saturation state of surface water with respect to calcite minerals, causing difficulty for

calcitic

organisms to produce shells and skeletons.

Pollution

Overfishing

Fun Facts & Study Tool

Calcium is the 5

th

most abundant element in Earth’s crust, present at a level of about 3% in the oceans and soil.

The element name “calcium” comes from the Latin word “

calcis

” meaning “lime”

C-Crucial C-

Calcis

M-Mineral

A-Abundant I-Industrial

emmisions

L-Life U-Use

Magnesium Cycle

Found in high concentrations in limestone and marble

As rock particles weather over time, magnesium particles are slowly released into the soil

Plants take in nutrients from soil, including magnesium

When plants decompose magnesium particles are released into the atmosphere (not in a gas state)

Marble

soil

Plant

A

tmosphere

Human and animal use

RSPDA

Rock

Soil

Plant

Decomposition

Air

Magnesium and human impact and dependence

We, as well as plants and animals need magnesium to function.

Humans impact mg cycle through pollution

Example: Acid Rain depletes amount of mg in soil

Soil now cannot produce healthy plants

Causes magnesium deficiencies

Fun facts

Magnesium is the central element of chlorophyll

Scientists can tell if a plant has a magnesium deficiency by plants color

Mg is the basis of early life on earth

Alcohol abuse can lead to mg deficiency

Sources

https://prezi.com/ndl3mx0vtxtj/the-calcium-cycle/

http://

chemistry.about.com/od/elementfacts/a/10-calcium-facts.htm

http://

www.exatest.com/minerals.htm

https://prezi.com/6ped_sheurn_/magnesium-cycle

/

http://

www.webmd.com/vitamins-supplements/ingredientmono-998-magnesium.aspx?activeingredientid=998&activeingredientname=magnesium

http://www.ancient-minerals.com/magnesium-benefits/what-is-function

/