As such, you can look to some of these sites to help you better succeed in completing your homework and learning necessary material….Homework Websites for Students

10 Apps to Help Students With Their Social Studies Homework

• #1 World Atlas. Geography tends to be a difficult subject: memorizing countries’ placings and capital cities.
• #2 PBS Students.
• #3 Constitution for iPad.
• #4 News-O-Matic School Edition.
• #5 Social Studies Friendzy.
• #6 The Pyramids.
• #7 iCivics.
• #8 Oregon Trail.

Social Studies Friendzy

• Top Homework Helper.
• Khan Academy.
• Study Geek.
• Tutor.com.
• Chegg.

Within the school program, social studies provides coordinated, systematic study drawing upon such disciplines as anthropology, archaeology, economics, geography, history, law, philosophy, political science, psychology, religion, and sociology, as well as appropriate content from the humanities, mathematics, and …

The 8 strands addressed are: Culture, History, Government, Economy, Social Studies Skills, Science, Technology, and Society, Citizenship, and Geography.

Plants require 17 essential elements for growth: carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), sulfur (S), cal- cium (Ca), magnesium (Mg), boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn).

Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur.

Fertilizer Selection Most gardeners should use a complete fertilizer with twice as much phosphorus as nitrogen or potassium. An example would be 10-20-10 or 12-24-12. These fertilizers usually are easy to find. Some soils contain enough potassium for good plant growth and don’t need more.

Plants require eighteen elements found in nature to properly grow and develop. Deficiency of these nutrients contributes to reduced plant growth, health, and yield; thus they are the three most important nutrients supplied by fertilizers. The secondary nutrients include calcium (Ca), magnesium (Mg), and sulfur (S).

• Nitrogen.
• Phosphorus.
• Potassium.
• Sulfur.
• Magnesium.
• Calcium.
• Iron.
• Boron.

Hydrogen can be produced from diverse, domestic resources. Currently, most hydrogen is produced from fossil fuels, specifically natural gas. Electricity—from the grid or from renewable sources such as wind, solar, geothermal, or biomass—is also currently used to produce hydrogen.

The mineral nutrient elements play essential roles such as constituent of cell structures and cell metabolites, in cell osmotic relations and turgor-related processes, energy transfer reactions, enzyme-catalysed reactions and plant reproduction. Plant productivity depends on the efficient discharge of these functions.

1. Nitrogen: Nitrate (the form of nitrogen that plants use) helps foliage grow strong by affecting the plant’s leaf development. It is also responsible for giving plants their green coloring by helping with chlorophyll production (gardensalive.com).

Deficiency symptoms: New foliage, buds and roots have stunted growth. Younger leaves curl downwards with browning of leaf edges and leaf tips, also known as tip burn. In some plants, they may also show abnormally green foliage. Roots become short and stubby.

The P in NPK is phosphorus Phosphorus stimulates root growth, helps plants set buds and flowers, and produce seeds. It also helps plants use other nutrients more efficiently, and helps turn energy from the sun into usable energy for your plants.

What is NPK and Why is it Important? So now that you know what the numbers on fertilizer mean, you need to know why NPK is important to your plants. All plants need nitrogen, phosphorus and potassium to grow. Without enough of any one of these nutrients, a plant will fail.

NPK 20 20 20 Fertilizer

• All Essential Elements. Nitrogen phosphorus and potassium are the basic nutrients required by plants for growth and flowering.
• Water Soluble. This fertilizer is completely water-soluble.
• Increasing flowers and fruits. Performs very well for flowering plants and fruit-bearing plants.

NPK stands for nitrogen, phosphorous and potassium which are three of the most important nutrients required by plants. The numbers following NPK are the percent amounts of each nutrient. An NPK value of 10-5-5 means that the fertilizer contains 10% nitrogen, 5% phosphorus and 5% potassium.