We found 11 results that contain "ewa"

Natural resources are the raw materials and sources of energy that we use. Petrol, metals, soil, sand, wind, water, and everything in between are natural resources. Manufactured items such as plastic, sheet metal, fabrics, microchips, electricity and concrete are not natural resources, but are most definitely derived from natural resources.

Natural resources are the raw materials and sources of energy that we use.

Petrol, metals, soil, sand, wind, water and everything in between are natural resources. Manufactured items such as plastic, sheet metal, fabrics, microchips, electricity and concrete are not natural resources, but are most definitely derived from natural resources.

Think about the relationship between natural resources and manufactured products. In essence, we call them “natural” resources because they are things human society uses that are created (or were created in the case of fossil fuels) without human intervention.


Perpetually Renewable Resources
Perpetually renewable resources are the easiest resources to understand; these are natural resources that are constantly replenished by the Sun’s and Earth’s natural processes. For example, every day the sun delivers an average of 198 Watts of energy to every square meter (m

) of the Earth’s surface. For comparison a standard incandescent light bulb in a bedside lamp uses 40 Watts, or a 100kg person climbing a step in 2 seconds uses roughly 200 Watts. Every day without fail for the last 5 billion years (plus or minus a few hundred million years) the Sun has delivered this solar energy.


Together with geothermal energy (heat from the Earth’s interior), the Sun’s perpetual energy powers the winds, ocean currents, precipitation and most of the Earth’s plant life. Solar and geothermal natural resources currently energise a significant and growing percentage of many nations’ electrical grids. It is perpetually renewable in the sense that no matter how much we use in terms of human time-scales (e.g decades to millennia), the Sun and the Earth will always make more.


Intermediate Renewable Resources
Intermediate renewable resources are only renewable resources if we don’t use them too quickly. They are resources such as freshwater, soil, crops and trees for timber. If we didn’t use them, they would be perpetually renewable, but because they require time (on human time-scales) to regenerate or grow, we can overuse them until they are no longer available.


Freshwater is a great example of an intermediate renewable resource. Through the water cycle, the sun evaporates water from the surface of saltwater oceans that travels over land and falls back to earth as freshwater rain. This rain fills the lakes, rivers and aquifers we use for agriculture, industry and drinking water. If we use this freshwater at the same rate as the rain recharging it, then we won’t run out. If we use the freshwater faster than it recharges, then we will. Intermediate renewable resources must be carefully managed to ensure they are not depleted.


Non-renewable Resources
The last category of natural resources are the non-renewables. These are resources that will not regenerate on human time-scales. Once they have been depleted they will no longer be available and no more will be made. The most common examples of non-renewable resources are fossil fuels, so-called because most were created by processes that take millions of years. Fossil fuels include crude oil, natural gas, coal and uranium. Other non-renewable resources include metals, lithium and rare-Earth elements (REE’s), but it’s important to remember that while we may eventually run out of mineable metals and REE’s, with careful waste management, these can be recovered through recycling. However, it is not the same for fossil fuels as using them for energy alters their chemistry so they are no longer useful.

Fish farming is an ideal business idea for investors with available land, and it doesn’t always require a large body of water. You can start a fish farm either by creating fish ponds or investing in fish tanks; it’s a highly scalable business idea. Once you have the proper knowledge of fish raising, you will be able to decide the type of fish to raise. According to FinModelsLab, a well-run fish farm can produce a return on investment (ROI) of 15% to 40% annually, with many fish farmers achieving a full return on their investment within three to five years.

Fish such as tilapia, cod, trout, and catfish are popular because they are easy to raise and in high demand. Small-scale farms are the usual suppliers of fish in their local supermarkets and restaurants.

Other popular varieties of commercially-raised fish include:

Yellow Perch
Eel
Grass Carp
Tuna
Salmon

Not all fish are raised for food. Goldfish and koi are popular fish to farm as well. For non-food fish, focus on cultivating premium species that will fetch a higher price when you sell. Whether you are raising fish for food or not, adopting sustainable farming practices will be better for both your business branding and your long-term operational costs.

The decision as to which fish you want to raise will ultimately rely on your skill, financial capacity, market demand, and agro-climatic condition. This refers to the normal soil types, rainfall, temperature, and water availability that affect the type of vegetation in the area.

“Start an adopt-a-tree program. This allows farmers to do what they do best—grow things. To start, you’ll need to have a simple website. But if you run a farm, you should have one anyway. The next thing you’ll need are the actual trees and the tools to plant them. Invest in a good quality camera to take pictures of the trees for the people adopting them. Take pictures when you plant them and as they grow to use as proof that you planted the trees. Finally, have certificates printed up to show adoption of the trees and ones that are to be given as a gift or memorial.”